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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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tv repairable or not
Our tv occasionally only displays a bright white line directly across the
middle of the screen when turned on.Sometimes if you just leave it on , it eventually comes good.This is happening more frequently by the month , to the point where it happens 2 out of 3 times (who said it aint bad).What is the electronical diagnosis and is it worth having it repaired?It's worth a few quid($1000 AUD),a 68 cm job,with teletext and stereo of course and as is always the case,it's past the 5 year extended warranty by about 10 months.Please tell me i can get it repaired for $1-200 and i will be a happy chappy even if tvs are incredibly cheap at the moment. |
#2
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tv repairable or not
"Geoff.C" wrote in message ... Our tv occasionally only displays a bright white line directly across the middle of the screen when turned on.Sometimes if you just leave it on , it eventually comes good.This is happening more frequently by the month , to the point where it happens 2 out of 3 times (who said it aint bad).What is the electronical diagnosis and is it worth having it repaired?It's worth a few quid($1000 AUD),a 68 cm job,with teletext and stereo of course and as is always the case,it's past the 5 year extended warranty by about 10 months.Please tell me i can get it repaired for $1-200 and i will be a happy chappy even if tvs are incredibly cheap at the moment. Yes, that set should be worth investing the repair cost. It is losing vertical sweep. The problem could be something as simple as a capacitor. I'd get a repair estimate. Some shops provide them at no cost. |
#3
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tv repairable or not
I believe that any honest tv technician can fixit very quickly for a
reasonable small amount (of bucks..). Most likely some soldering joint has wear out due to the electromigration effect of the high current path over the tin and lead soldering alloy. Quite a common problem. Cheers, Fabio "Geoff.C" ha scritto nel messaggio ... Our tv occasionally only displays a bright white line directly across the middle of the screen when turned on.Sometimes if you just leave it on , it eventually comes good.This is happening more frequently by the month , to the point where it happens 2 out of 3 times (who said it aint bad).What is the electronical diagnosis and is it worth having it repaired?It's worth a few quid($1000 AUD),a 68 cm job,with teletext and stereo of course and as is always the case,it's past the 5 year extended warranty by about 10 months.Please tell me i can get it repaired for $1-200 and i will be a happy chappy even if tvs are incredibly cheap at the moment. |
#4
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tv repairable or not
It's a very easy repair job, however if you run it for long with the bright
white line you'll burn a line into the tube and it's a writeoff. "Geoff.C" wrote in message ... Our tv occasionally only displays a bright white line directly across the middle of the screen when turned on.Sometimes if you just leave it on , it eventually comes good.This is happening more frequently by the month , to the point where it happens 2 out of 3 times (who said it aint bad).What is the electronical diagnosis and is it worth having it repaired?It's worth a few quid($1000 AUD),a 68 cm job,with teletext and stereo of course and as is always the case,it's past the 5 year extended warranty by about 10 months.Please tell me i can get it repaired for $1-200 and i will be a happy chappy even if tvs are incredibly cheap at the moment. |
#5
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tv repairable or not
"James Sweet" writes:
It's a very easy repair job, however if you run it for long with the bright white line you'll burn a line into the tube and it's a writeoff. Well, I assume it's pretty boring watching a white line so maybe common sense will prevail. --- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html Important: The email address in this message header may no longer work. To contact me, please use the Feedback Form at repairfaq.org. Thanks. |
#6
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tv repairable or not
I dunno... My grandmother had an oldish (1988) Philco 27" console set that
had collapsed and she kept using the set for many months just to listen to the audio! She would let it sit and run with this bright as can be white line across the screen and didn't mind it at all. I finally happened to be over at her house one day while the set was running and I noticed what was going on. By the time I saw the set, the line was no where near as bright as they are when they first collapse. It had *plenty* of burn! Of all things, this was such a simple problem, too... This set had a small switch for Service Mode that collapsed the verticle sweep and it had shorted! Cleaning the switch returned proper operation of the set except for a black horizontal line across the middle of the CRT... -Steve Sam Goldwasser wrote in message ... "James Sweet" writes: It's a very easy repair job, however if you run it for long with the bright white line you'll burn a line into the tube and it's a writeoff. Well, I assume it's pretty boring watching a white line so maybe common sense will prevail. --- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html Important: The email address in this message header may no longer work. To contact me, please use the Feedback Form at repairfaq.org. Thanks. |
#8
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tv repairable or not
You claim to be of "reasonable electrical aptitude" then you should be able
to identify the vertical IC on its own heatsink. Inspect the PCB for any cold/bad solder joints and resolder appropriatley. First performing a visual inspection of the vertical area, If you have an ESR meter (a must if you are servicing) you should check the vertical area for leakly, high ESR electrolytics,otherwise you will have to resort to the more costly, time consuming method of trial and error Good luck Dan "Geoff.C" wrote in message ... Is anyone aware of how i might go about resoldering the Vertical IC Pins and IDing where they are located.I am of reasonable electrical aptitude and have the required equipment.Is there a website out there or could someone who has posted on this particular topic explain to me how i might go about it. Help via E-mail much appreciated. "Sarah" wrote in message ble.rogers.com... Vertical collapse, resolder the vertical IC pins. "Steve Reinis" wrote in message ... I dunno... My grandmother had an oldish (1988) Philco 27" console set that had collapsed and she kept using the set for many months just to listen to the audio! She would let it sit and run with this bright as can be white line across the screen and didn't mind it at all. I finally happened to be over at her house one day while the set was running and I noticed what was going on. By the time I saw the set, the line was no where near as bright as they are when they first collapse. It had *plenty* of burn! Of all things, this was such a simple problem, too... This set had a small switch for Service Mode that collapsed the verticle sweep and it had shorted! Cleaning the switch returned proper operation of the set except for a black horizontal line across the middle of the CRT... -Steve Sam Goldwasser wrote in message ... "James Sweet" writes: It's a very easy repair job, however if you run it for long with the bright white line you'll burn a line into the tube and it's a writeoff. Well, I assume it's pretty boring watching a white line so maybe common sense will prevail. --- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html Important: The email address in this message header may no longer work. To contact me, please use the Feedback Form at repairfaq.org. Thanks. |
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