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post #1 of 21 (permalink) Old 02-06-2007, 12:10 AM Thread Starter
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Any local TV repair ppl on the board?

My basement just got renovated and with the old 50inch toshiba. My parents have the 60" Sony XRB2 and i have this old thing for myself. IT was ok for the most part until a few days ago when it crashed from excessive use etc... and now the red convergence channel wont align horizontally.

Its too big to take to a repair shop and i dont know how to go about these things. I replaced the convergence chips for the V and H sections.

The blue colour converges H and V, the red converges Vertically only and its offset. Heres a pic to get an idea.

http://i32.photobucket.com/albums/d2...l/DSC05239.jpg

http://i32.photobucket.com/albums/d2...l/DSC05243.jpg


IF anyone is a tv repairman or knows of a good place to get this fixed please let me know. I would prefer to take the board in only if someone could find the damaged part.

Any suggestions are welcome and would be greatly appreciated.

Ciprian

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post #2 of 21 (permalink) Old 02-06-2007, 12:40 AM
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Umm, could you give us a model #. We could do some quick looking around for you to see if we could help you out. If you have replaced the convergence chips yourshelf, then most likely you can also fix this yourshelf too. I just did a quick search on the net about converence problems with the red gun, it seem's to be a very common problem with Toshiba TV's. Since there is so many model #'s around, with your model # we may be able to see what the most common fix is.
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post #3 of 21 (permalink) Old 02-06-2007, 12:53 AM Thread Starter
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sorry about that... its a toshiba TP50G50

Ya i used a tv forum board but then they didnt know anything after the chips. THats why i thought it was game over if that didnt work.


If i could get the schematic for the convergence board that would probably give some insight to possible damaged transistors or resistors along the line.

Thanks for the help.
Ciprian
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post #4 of 21 (permalink) Old 02-06-2007, 11:20 AM
 
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Check for bad solder joints...
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post #5 of 21 (permalink) Old 02-06-2007, 11:33 AM
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Check for ruptured/ leaking capacitors. The electrolytic caps will dry out w/ age or if they are underrated they can bust from over voltage. Check the board for any cooked resistors, though I doubt that could be the cause.

I had a friend w/ large TV that would not show the red color. I'm not sure but I think there was a board for that color. He had the entire board replaced.

If anything inside did fry you might sniff around. Usually things like caps or resistors stink when they smoke. If there is an peculiar odor or discoloration from any of the boards or just in the general TV case thats a good indication.

-GB49
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post #6 of 21 (permalink) Old 02-06-2007, 11:41 AM
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Ask a few homeless people, 90% of them used to have TV repair shops in the 80s and 90s.
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post #7 of 21 (permalink) Old 02-06-2007, 01:02 PM Thread Starter
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ill try to take it in to a small electronics shop. I looked around and a resistor seems to have smoked the board points but i measured the resistor and its fine since they have 1 for each colour.

I cant find any ruptured or smoked reistors or caps but ill still look around. If anything i can replace the digital convergence board since the ics are way too small to service.
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post #8 of 21 (permalink) Old 02-06-2007, 04:53 PM
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You can probably remove the chassis from the cabinet to take to the repair shop. I had a 50" rca. My tv had all the electronics in a box with handles on it, that slid into the cabinet from the rear. I was actually able to transport it in my 2001 sunfire
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post #9 of 21 (permalink) Old 02-06-2007, 04:59 PM Thread Starter
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ya the board is small... most repair shops request the entire tv tho. I still have to find one that will service large tvs. So far all small ones have suggested a house call.

Does anyone have any compoenets i should look at first? A suggestion of some sort.

1. bad solder joints
2. burnt resistors, transistors, caps
3.
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post #10 of 21 (permalink) Old 02-06-2007, 05:56 PM
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i think i have the 55 inch model of toshiba. you tried the adjustments on the remote from left to right to move the red bar. i now have a 62 inch dlp toshiba 62mx196 model. cost me $4000. if i could of gone bigger i think i would of. toshiba is top rated. not sure where u live but pcrichard and son has house calls and they come to the house or bestbuy. if not under warranty u can get hit with a huge bill. i tell ya that one. i took out a 6 yr warranty on this 62 incher.
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post #11 of 21 (permalink) Old 02-06-2007, 06:07 PM
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A magnifying glass comes in handy when identifying bad or cold solder joints.
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post #12 of 21 (permalink) Old 02-14-2007, 01:22 AM Thread Starter
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LOL thanks guys. Called a local repair guy. He charged me 200$ to replace a resistor on the red line. Talk about a rip off.

Fun stuff LOL.. at least my tv is running again. The tv is prob worth less than 200$ now LOL..... it better run for a while or else its going in the trash after the next repair.

I installed thermal fans to cool the chips now to prevent this crap from going again. The next thing to fail in the near future given its age are the crt tubes and thats when its a goner, im switching to LCD like the new xbr2 is that happens LOL.

Thanks for all of the suggestions, just gave up since i didnt have enough time to mess around with it.

CIprian

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post #13 of 21 (permalink) Old 02-14-2007, 01:32 AM
 
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Quote:
Originally Posted by linuxglobal
LOL thanks guys. Called a local repair guy. He charged me 200$ to replace a resistor on the red line. Talk about a rip off.

Fun stuff LOL.. at least my tv is running again. The tv is prob worth less than 200$ now LOL..... it better run for a while or else its going in the trash after the next repair.

I installed thermal fans to cool the chips now to prevent this crap from going again. The next thing to fail in the near future given its age are the crt tubes and thats when its a goner, im switching to LCD like the new xbr2 is that happens LOL.

Thanks for all of the suggestions, just gave up since i didnt have enough time to mess around with it.

CIprian
Stay away from the XBR2. They've had alot of backlight issues with them and Sony ignores the problem. I was about to buy one and figured I'd do some research first. Fortunately I found out before buying it. The Sony 60" SXRD 1080p rear projection I got in november is excellent. For the LCD I was very impressed with the 46" 1080p samsung, which I picked up on sunday. It's a beautiful TV.
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post #14 of 21 (permalink) Old 02-14-2007, 01:38 AM Thread Starter
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LOL my parents just bought the Sony 60inch xbr2 LOL... arent they all sxrd??? this one has something like that on it. It looks diff than the cheaper sxrd models.... i dunno.... it came with a spare lamp and it has the extended warantty so it should be ok. My toshiba held up for a while but im gonna switch to an lcd forthe new one anyways so ill look at something in the 40s or 60s depending what sizes they are at when mine goes down.

Thanks Steve.
BTw ill pm you about the fogs, midterms etc... but a few issues came up.... basically due to the lens u cant see squat with the fogs.

I will send u more pics, detailed shot.

later,
Ciprian

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post #15 of 21 (permalink) Old 02-14-2007, 01:41 AM
 
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Quote:
Originally Posted by linuxglobal
LOL my parents just bought the Sony 60inch xbr2 LOL... arent they all sxrd??? this one has something like that on it. It looks diff than the cheaper sxrd models.... i dunno.... it came with a spare lamp and it has the extended warantty so it should be ok. My toshiba held up for a while but im gonna switch to an lcd forthe new one anyways so ill look at something in the 40s or 60s depending what sizes they are at when mine goes down.

Thanks Steve.
BTw ill pm you about the fogs, midterms etc... but a few issues came up.... basically due to the lens u cant see squat with the fogs.

I will send u more pics, detailed shot.

later,
Ciprian
The SXRD is a rear projection. It is like a DLP or LCD projection except it uses Sony's proprietary SXRD chip. The XBR2 is a flat panel LCD. If they got a 60" it's like mine and it's awesome
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