Home |
Search |
Today's Posts |
|
Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
For remote controls that have been properly cleaned out and still
don't work like new, I understand some conductive material needs to be coated onto the circuit board contacts on the inside of the pad buttons. Reviewing web discussions of this I wonder if a good approach may be to mix graphite in silicone glue and lightly coat the surface of the pad's underside. Anyone tried this or have a thought on it? Others have used electrically conductive paint (e.g., that purchased at auto supply stores to reconduct broken rear window defrost circuits) but that would not seem to be as flexible as silicone glue with conductive material mixed in it. I did read where someone mixed finely shredded copper (from pipe) with thinly diluted white glue and it worked well (but for how long?). It would seem that the latter approach would be better if silicone glue was used, as it is more flexible. What ye think? |
#2
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
"Thomas Williams" For remote controls that have been properly cleaned out and still don't work like new, I understand some conductive material needs to be coated onto the circuit board contacts on the inside of the pad buttons. Reviewing web discussions of this I wonder if a good approach may be to mix graphite in silicone glue and lightly coat the surface of the pad's underside. Anyone tried this or have a thought on it? ** Think the graphite might simply dissolve in the silicone adhesive and the surface remain non conducting. Conductive glues are rare animals for this reason. Why don't YOU try it ?? ..... Phil |
#3
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
"Jamie the Radio Ham " ** Post only to the OP - you ****ing, ****wit. I'm not the one with the problem. ...... Phil |
#4
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
Phil Allison wrote:
"Thomas Williams" For remote controls that have been properly cleaned out and still don't work like new, I understand some conductive material needs to be coated onto the circuit board contacts on the inside of the pad buttons. Reviewing web discussions of this I wonder if a good approach may be to mix graphite in silicone glue and lightly coat the surface of the pad's underside. Anyone tried this or have a thought on it? ** Think the graphite might simply dissolve in the silicone adhesive and the surface remain non conducting. Conductive glues are rare animals for this reason. Why don't YOU try it ?? .... Phil http://www.wikihow.com/Repair-a-Remote-Control |
#5
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
Phil Allison wrote:
I'm not the one with the problem. Are you sure ? ..... Phil |
#6
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
"Jamie the ****wit Radio Ham " ** Post only to the OP - you ****ing, ****wit. The OP has the problem. ...... Phil |
#7
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
On Sat, 8 Jan 2011 11:49:26 -0800 (PST), Thomas Williams
wrote: For remote controls that have been properly cleaned out and still don't work like new, I understand some conductive material needs to be coated onto the circuit board contacts on the inside of the pad buttons. Reviewing web discussions of this I wonder if a good approach may be to mix graphite in silicone glue and lightly coat the surface of the pad's underside. Anyone tried this or have a thought on it? Others have used electrically conductive paint (e.g., that purchased at auto supply stores to reconduct broken rear window defrost circuits) but that would not seem to be as flexible as silicone glue with conductive material mixed in it. I did read where someone mixed finely shredded copper (from pipe) with thinly diluted white glue and it worked well (but for how long?). It would seem that the latter approach would be better if silicone glue was used, as it is more flexible. What ye think? I use conductive paste: http://www.hifi-remote.com/manuals/p8/rs-rf.shtml?15-1995#wornout http://www.permatex.com/products/automotive/specialized_maintenance_repair/auto_glass_lens_repair/Permatex_Quick_Grid_Rear_Window_Defogger_Repair_Ki t.htm If available, I've also used Aquadag (water based graphite paste). http://en.wikipedia.org/wiki/Aquadag Before you attack, clean both the graphite button bottom and the gold contacts on the PCB with alcohol. It might just be grease on the contacts. The problem with mixing your own conductive graphite concoction is that only a few formulations are actually conductive. If you don't add enough graphite, or the graphite particles are too small, they will not touch each other and therefore will not be conductive. I've tried to make my own conductive glue with powdered aluminum and epoxy. It failed badly and was mostly an insulator. I eventually got it to conduct by radically adjusting the aluminum to epoxy ratio, but with little epoxy to act as a binder, it was terminally brittle. Anyway, try it. You might get lucky and find the right combination of grain size and graphite to glue ratio. Test with an ohms guesser. Your remote should work with anything less than about 1,000 ohms per square, but I'm guessing: http://en.wikipedia.org/wiki/Sheet_resistance -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#8
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
On Sat, 08 Jan 2011 19:36:13 -0800, Jeff Liebermann
wrote: I use conductive paste: http://www.hifi-remote.com/manuals/p8/rs-rf.shtml?15-1995#wornout http://www.permatex.com/products/automotive/specialized_maintenance_repair/auto_glass_lens_repair/Permatex_Quick_Grid_Rear_Window_Defogger_Repair_Ki t.htm If available, I've also used Aquadag (water based graphite paste). http://en.wikipedia.org/wiki/Aquadag One mo http://www.instructables.com/id/Make-Conductive-Glue-and-Glue-a-Circuit/ http://www.instructables.com/id/Conductive-Glue-And-Conductive-Thread-Make-an-LED/step1/Make-Conductive-Glue-Conductive-Paint-and-Conduc/ I haven't tried these but they sure look plausible. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#9
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
"Phil Allison" wrote in message ... Conductive glues are rare animals for this reason. I ran the abut in this problem a few years ago. Previously, disassembly and cleanout with detergent water worked to perk up a balking RC. But a few years later, that did not solve all dropouts. I took to scrubbing the little rubber conducting boots with lacquer thinner, but that still did not solve eve half the dropouts. My last resort was to add an aluminum foil bits the size of the footprint to each contact. That perked up about half the dropouts, still not good enough for serious cassette and DVD watching where the program content was recorded off of standard broadcast with its weighty commercial content. As a "last" resort (there is really always "just-one-more" to be found), I went to mother Radio Shack and bought a universal control. It included my VCR and TV codes, so now I'm back to 95% RC functioning (nothing's perfect). Ange |
#10
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
Thomas Williams wrote in message
... For remote controls that have been properly cleaned out and still don't work like new, I understand some conductive material needs to be coated onto the circuit board contacts on the inside of the pad buttons. Reviewing web discussions of this I wonder if a good approach may be to mix graphite in silicone glue and lightly coat the surface of the pad's underside. Anyone tried this or have a thought on it? Others have used electrically conductive paint (e.g., that purchased at auto supply stores to reconduct broken rear window defrost circuits) but that would not seem to be as flexible as silicone glue with conductive material mixed in it. I did read where someone mixed finely shredded copper (from pipe) with thinly diluted white glue and it worked well (but for how long?). It would seem that the latter approach would be better if silicone glue was used, as it is more flexible. What ye think? Rob pairs (or more if same matrix dimensions) of buttons cut from the pad of some disused zapper that has much the same size and spacing of buttons. |
#11
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
On Jan 9, 2:57*am, "N_Cook" wrote:
Thomas Williams wrote in message ... For remote controls that have been properly cleaned out and still don't work like new, I understand some conductive material needs to be coated onto the circuit board contacts on the inside of the pad buttons. Reviewing web discussions of this I wonder if a good approach may be to mix graphite in silicone glue and lightly coat the surface of the pad's underside. Anyone tried this or have a thought on it? Others have used electrically conductive paint (e.g., that purchased at auto supply stores to reconduct broken rear window defrost circuits) but that would not seem to be as flexible as silicone glue with conductive material mixed in it. I did read where someone mixed finely shredded copper (from pipe) with thinly diluted white glue and it worked well (but for how long?). It would seem that the latter approach would be better if silicone glue was used, as it is more flexible. What ye think? Rob pairs (or more if same matrix dimensions) of buttons cut from the pad of some disused zapper that has much the same size and spacing of buttons. thanks, Jeff. your post was quite helpful (unlike some of the others here, I won't mention any names ("Phil, Jamie and Angelo" (at least the latter made an attempt)) will try the window defog preparation first, then later explore the two articles on making your own . . . |
#12
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
On Sun, 9 Jan 2011 09:06:29 -0800 (PST), Thomas Williams
wrote: thanks, Jeff. your post was quite helpful (unlike some of the others here, I won't mention any names ("Phil, Jamie and Angelo" (at least the latter made an attempt)) will try the window defog preparation first, then later explore the two articles on making your own . . . Y'er welcome. It's a common problem. Incidentally, if you're going to try making your own graphite conductive paste, don't get the bright idea of using graphite lock lube. To be a lube, the particles must be spherical, which will not touch each other, and therefore not conduct. What you want are graphite flakes, which will overlap, and therefore conduct. Good luck. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#13
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
Jeff Liebermann wrote in message
... On Sun, 9 Jan 2011 09:06:29 -0800 (PST), Thomas Williams wrote: thanks, Jeff. your post was quite helpful (unlike some of the others here, I won't mention any names ("Phil, Jamie and Angelo" (at least the latter made an attempt)) will try the window defog preparation first, then later explore the two articles on making your own . . . Y'er welcome. It's a common problem. Incidentally, if you're going to try making your own graphite conductive paste, don't get the bright idea of using graphite lock lube. To be a lube, the particles must be spherical, which will not touch each other, and therefore not conduct. What you want are graphite flakes, which will overlap, and therefore conduct. Good luck. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 Source for guaranteed "flakey" graphite ? |
#14
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
On Sun, 9 Jan 2011 17:40:25 -0000, "N_Cook" wrote:
Jeff Liebermann wrote in message .. . On Sun, 9 Jan 2011 09:06:29 -0800 (PST), Thomas Williams wrote: thanks, Jeff. your post was quite helpful (unlike some of the others here, I won't mention any names ("Phil, Jamie and Angelo" (at least the latter made an attempt)) will try the window defog preparation first, then later explore the two articles on making your own . . . Y'er welcome. It's a common problem. Incidentally, if you're going to try making your own graphite conductive paste, don't get the bright idea of using graphite lock lube. To be a lube, the particles must be spherical, which will not touch each other, and therefore not conduct. What you want are graphite flakes, which will overlap, and therefore conduct. Good luck. Source for guaranteed "flakey" graphite ? The author of one of the links I previously mentioned uses AGS Extra Fine Graphite from: http://www.elementalscientific.net/store/scripts/prodView.asp?idProduct=1971 I have a small 4 oz bottle of graphite in the office I got from an auto body shop. They use it for lubing window and lock mechanisms in the door. It seems like a lifetime supply. Doing some more reading, it appears that only some lock lube uses spherical particles. Most of the cheap stuff is flake, so I guess it's probably acceptable to use. Other sources: http://www.sears.com/shc/s/p_10153_12605_SPM223947446P http://www.google.com/#hl=en&q=flake+lubricating+graphite Mo http://www.asbury.com/Natural-Flake-Graphite.html Spherical Graphite (used in lock lube and Li-Ion batteries: http://www.hpmsgraphite.com/sphericalgraphite.html http://www.hpmsgraphite.com -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#15
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
Commercial products exist. See www.mcmelectronics.com
On Jan 9, 1:27*pm, Jeff Liebermann wrote: On Sun, 9 Jan 2011 17:40:25 -0000, "N_Cook" wrote: Jeff Liebermann wrote in message .. . On Sun, 9 Jan 2011 09:06:29 -0800 (PST), Thomas Williams wrote: thanks, Jeff. *your post was quite helpful (unlike some of the others here, I won't mention any names ("Phil, Jamie and Angelo" (at least the latter made an attempt)) *will try the window defog preparation first, then later explore the two articles on making your own . . . Y'er welcome. *It's a common problem. *Incidentally, if you're going to try making your own graphite conductive paste, don't get the bright idea of using graphite lock lube. *To be a lube, the particles must be spherical, which will not touch each other, and therefore not conduct. What you want are graphite flakes, which will overlap, and therefore conduct. *Good luck. Source for guaranteed "flakey" graphite ? The author of one of the links I previously mentioned uses * *AGS Extra Fine Graphite from: http://www.elementalscientific.net/store/scripts/prodView.asp?idProdu... I have a small 4 oz bottle of graphite in the office I got from an auto body shop. *They use it for lubing window and lock mechanisms in the door. *It seems like a lifetime supply. Doing some more reading, it appears that only some lock lube uses spherical particles. *Most of the cheap stuff is flake, so I guess it's probably acceptable to use. Other sources: http://www.sears.com/shc/s/p_10153_12605_SPM223947446P http://www.google.com/#hl=en&q=flake+lubricating+graphite Mo http://www.asbury.com/Natural-Flake-Graphite.html Spherical Graphite (used in lock lube and Li-Ion batteries: http://www.hpmsgraphite.com/sphericalgraphite.html http://www.hpmsgraphite.com -- Jeff Liebermann * * 150 Felker St #D * *http://www.LearnByDestroying.com Santa Cruz CA 95060http://802.11junk.com Skype: JeffLiebermann * * AE6KS * *831-336-2558 |
#16
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
On Sat, 8 Jan 2011 11:49:26 -0800 (PST), Thomas Williams
wrote: For remote controls that have been properly cleaned out and still don't work like new, I understand some conductive material needs to be coated onto the circuit board contacts on the inside of the pad buttons. Reviewing web discussions of this I wonder if a good approach may be to mix graphite in silicone glue and lightly coat the surface of the pad's underside. Anyone tried this or have a thought on it? Others have used electrically conductive paint (e.g., that purchased at auto supply stores to reconduct broken rear window defrost circuits) but that would not seem to be as flexible as silicone glue with conductive material mixed in it. I did read where someone mixed finely shredded copper (from pipe) with thinly diluted white glue and it worked well (but for how long?). It would seem that the latter approach would be better if silicone glue was used, as it is more flexible. What ye think? There is conductive paint for just this purpose at electronics stores. Ford Electronics in Fullerton, CA had some. I saw it there. I think they ship. FWIW I tried the aluminum foil glued on, I didn't have 100% success. Since I wanted a 100% working remote control any less than 100% is failure. I haven't tried the paint. |
#17
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
On Sun, 9 Jan 2011 12:36:16 -0800 (PST), "Ron D."
wrote: Commercial products exist. See www.mcmelectronics.com Please note that the original question was about making his own formulation. http://www.mcmelectronics.com/product/CAIG-LABORATORIES-K-CK44-G-/200-315 I call your missing link and raise you 4 mo http://www.mgchemicals.com/products/8339.html http://www.remotecontrolsinc.com/keypad_repair_kit.aspx http://www.replacementremotes.com/Keypad-Repair-Kit/Buy-Keypad-Repair-Kit-Repair-your-Remote-TV-VCR-DVD-Remote.html http://parts.digikey.com/1/parts/11927-rubber-keypad-repair-kit-cw2605.html -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#18
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
" wrote in message ... On Sat, 8 Jan 2011 11:49:26 -0800 (PST), Thomas Williams wrote: For remote controls that have been properly cleaned out and still don't work like new, I understand some conductive material needs to be coated onto the circuit board contacts on the inside of the pad buttons. Reviewing web discussions of this I wonder if a good approach may be to mix graphite in silicone glue and lightly coat the surface of the pad's underside. Anyone tried this or have a thought on it? Others have used electrically conductive paint (e.g., that purchased at auto supply stores to reconduct broken rear window defrost circuits) but that would not seem to be as flexible as silicone glue with conductive material mixed in it. I did read where someone mixed finely shredded copper (from pipe) with thinly diluted white glue and it worked well (but for how long?). It would seem that the latter approach would be better if silicone glue was used, as it is more flexible. What ye think? There is conductive paint for just this purpose at electronics stores. Ford Electronics in Fullerton, CA had some. I saw it there. I think they ship. FWIW I tried the aluminum foil glued on, I didn't have 100% success. Since I wanted a 100% working remote control any less than 100% is failure. I haven't tried the paint. How about Aqua-dag? I wonder if it is still available? Used to apply a conductive coating inside and outside of CRT envelopes. tm |
#19
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
On Sun, 9 Jan 2011 20:31:52 -0500, "tm"
wrote: " wrote in message .. . On Sat, 8 Jan 2011 11:49:26 -0800 (PST), Thomas Williams wrote: For remote controls that have been properly cleaned out and still don't work like new, I understand some conductive material needs to be coated onto the circuit board contacts on the inside of the pad buttons. Reviewing web discussions of this I wonder if a good approach may be to mix graphite in silicone glue and lightly coat the surface of the pad's underside. Anyone tried this or have a thought on it? Others have used electrically conductive paint (e.g., that purchased at auto supply stores to reconduct broken rear window defrost circuits) but that would not seem to be as flexible as silicone glue with conductive material mixed in it. I did read where someone mixed finely shredded copper (from pipe) with thinly diluted white glue and it worked well (but for how long?). It would seem that the latter approach would be better if silicone glue was used, as it is more flexible. What ye think? There is conductive paint for just this purpose at electronics stores. Ford Electronics in Fullerton, CA had some. I saw it there. I think they ship. FWIW I tried the aluminum foil glued on, I didn't have 100% success. Since I wanted a 100% working remote control any less than 100% is failure. I haven't tried the paint. Aqudag won't work, however the Chemtronics remote repair kit works great. Chuck How about Aqua-dag? I wonder if it is still available? Used to apply a conductive coating inside and outside of CRT envelopes. tm |
#20
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
Thomas Williams wrote:
For remote controls that have been properly cleaned out and still don't work like new, I understand some conductive material needs to be coated onto the circuit board contacts on the inside of the pad buttons. Reviewing web discussions of this I wonder if a good approach may be to mix graphite in silicone glue and lightly coat the surface of the pad's underside. Anyone tried this or have a thought on it? Others have used electrically conductive paint (e.g., that purchased at auto supply stores to reconduct broken rear window defrost circuits) but that would not seem to be as flexible as silicone glue with conductive material mixed in it. I did read where someone mixed finely shredded copper (from pipe) with thinly diluted white glue and it worked well (but for how long?). It would seem that the latter approach would be better if silicone glue was used, as it is more flexible. What ye think? **There are some proprietory kits available for remote control repairs. They work. I've used them many times with great success. Use one. Alternatively, but a new remote, or find a suitable programmable one. -- Trevor Wilson www.rageaudio.com.au |
#21
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
Trevor Wilson wrote:
Thomas Williams wrote: For remote controls that have been properly cleaned out and still don't work like new, I understand some conductive material needs to be coated onto the circuit board contacts on the inside of the pad buttons. Reviewing web discussions of this I wonder if a good approach may be to mix graphite in silicone glue and lightly coat the surface of the pad's underside. Anyone tried this or have a thought on it? Others have used electrically conductive paint (e.g., that purchased at auto supply stores to reconduct broken rear window defrost circuits) but that would not seem to be as flexible as silicone glue with conductive material mixed in it. I did read where someone mixed finely shredded copper (from pipe) with thinly diluted white glue and it worked well (but for how long?). It would seem that the latter approach would be better if silicone glue was used, as it is more flexible. What ye think? **There are some proprietory kits available for remote control repairs. They work. I've used them many times with great success. Use one. Alternatively, but a new remote, or find a suitable programmable one. Here is the link to a product specifically made for fixing conductive keypads. http://www.mcmelectronics.com/produc...K44-G-/200-315 It works... I've used it. -- David dgminala at mediacombb dot net |
#22
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
Here is the link to a product specifically made for fixing conductive
keypads.http://www.mcmelectronics.com/produc...-K-CK44-G-/200... It works... I've used it. -- David I tried it ( Caikote 44 ). It worked fine for a couple weeks, then several of the keys died. Disappointing. |
#23
Posted to sci.electronics.repair
|
|||
|
|||
remote control keypad conductivity repair
On Sun, 6 Feb 2011 19:59:06 -0800 (PST), Thomas Williams
wrote: Here is the link to a product specifically made for fixing conductive keypads.http://www.mcmelectronics.com/produc...-K-CK44-G-/200... It works... I've used it. -- David I tried it ( Caikote 44 ). It worked fine for a couple weeks, then several of the keys died. Disappointing. Try Neolube. http://www.micromark.com/NEOLUBE-2-FL-OZ,8383.html. I'm most familiar with it for [redacted] the [redacted] in the [redacted] but it also works well for regenerating those conductive pads in remotes. Proper surface preparation is key, of course. -- Rich Webb Norfolk, VA |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Garage remote keypad problem | Home Repair | |||
Remote Keypad Restorer | Electronics Repair | |||
remote control repair | Electronics Repair | |||
TV Remote Control rubber pad(UR50CT1071) used in remote control for Panasonic TV Model TX-29GF10X | Electronics Repair | |||
Sears Garage Door Opener, Remote Keypad Problem | Home Repair |