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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. |
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#1
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Magnovox DTV converter boxes shut off after a few sec.
I have three Magnovox TB100 and TB110 type DTV converter boxes with the
same problem: They won't stay on more then a few seconds or minutes. Anyone ever found out what causes this? They are good units when they work and I like them. The ones I have do tune stations and do everything they are supposed to, just keep shutting off within a minute or less. I even got into one a while back and checked all the caps with an ESR meter but found none bad. |
#2
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Magnovox DTV converter boxes shut off after a few sec.
"WKW" I have three Magnovox TB100 and TB110 type DTV converter boxes with the same problem: They won't stay on more then a few seconds or minutes. Anyone ever found out what causes this? They are good units when they work and I like them. The ones I have do tune stations and do everything they are supposed to, just keep shutting off within a minute or less. I even got into one a while back and checked all the caps with an ESR meter but found none bad. ** Looks like a common fault, Bob Urz posted the same Q here in January last year: " Anyone successfully work on these cheap DTV converter boxes? I got a Magnavox TB100. It powers up and displays the TV channel. Then it shuts itself off in about 5 seconds. I did get into the setup menu and the auto shut off is set to off so i assume its not that. Have not been inside of it to check the caps yet. Are these POS even fixable? " http://groups.google.com/group/sci.e...tronics.repair .... Phil |
#3
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Magnovox DTV converter boxes shut off after a few sec.
First of all we are dealing with junk, so we treat it as such.;
Get the thing on and when it is on, hold down a remote button, as well as maybe in a separate test a keyboard button and see if the continual input makes it stay on. If so it is probably a software problem. Scrap it. Maybe....... If it still shuts down there is a chance that it is a power supply problem. Just because the caps don't have ESR doesn't mean the PS is working fine. Monitor voltages. And like any of the rest of this junk, if you don't find the problem in hardware, it is in software, in which case the unit is usually scrap. If there is a USB port you might be able to get firmware for it and then you can go around "fixing" every one you see. But it's more likely that they will become landfill. You have any idea how ****ing hard it is to grow tomatoes in TV convertor boxes ? Just hope your house isn't built on a landfill. J |
#4
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Magnovox DTV converter boxes shut off after a few sec.
"Phil Allison" wrote in
: ** Looks like a common fault, Bob Urz posted the same Q here in January last year: " Anyone successfully work on these cheap DTV converter boxes? I got a Magnavox TB100. It powers up and displays the TV channel. Then it shuts itself off in about 5 seconds. I did get into the setup menu and the auto shut off is set to off so i assume its not that. Have not been inside of it to check the caps yet. Are these POS even fixable? " http://groups.google.com/group/sci.e...owse_thread/th r ead/d1cceba0bc151243/66ed61895d535241?hl=en&q=%22magnavox+tb100%22 +grou p:sci.electronics.repair ... Phil I found that post myself with a google search before posting my question. Didn't find any replies to it though. |
#5
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Magnovox DTV converter boxes shut off after a few sec.
"WKW" "Phil Allison" ** Looks like a common fault, Bob Urz posted the same Q here in January last year: " Anyone successfully work on these cheap DTV converter boxes? I got a Magnavox TB100. It powers up and displays the TV channel. Then it shuts itself off in about 5 seconds. I did get into the setup menu and the auto shut off is set to off so i assume its not that. Have not been inside of it to check the caps yet. Are these POS even fixable? " http://groups.google.com/group/sci.e...owse_thread/th I found that post myself with a google search before posting my question. ** Shame you did not post that fact. Didn't find any replies to it though. ** Some questions have no answer... .... Phil |
#6
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Magnovox DTV converter boxes shut off after a few sec.
On Jun 6, 4:38*am, "Phil Allison" wrote:
"WKW" "Phil Allison" ** Looks like a common fault, Bob Urz posted the same Q here in January last year: " Anyone successfully work on these cheap DTV converter boxes? I got a Magnavox TB100. It powers up and displays the TV channel. Then it shuts itself off in about 5 seconds. I did get into the setup menu and the auto shut off is set to off so i assume its not that. Have not been inside of it to check the caps yet. Are these POS even fixable? *" http://groups.google.com/group/sci.e...owse_thread/th I found that post myself with a google search before posting my question. *** *Shame you did not post that fact. Didn't find any replies to it though. ** Some questions have no answer... ... * Phil Priced to retail at $40, those boxes were put on the market in 2008 and are now failing in 2012. Ten dollars per year to watch an ancient TV sounds fair to me. |
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