When I turn on our TV the picture will stay on for 5 minutes (each time get shorter) then picture goes out. Power light is still on. The remote or manual on/off button will not turn off the TV. We have to unplug the tv from the power source to get the power button off. When we plug it back in it does the same thing. Is this something we would be able to have repaired or would it be more cost effective to purchase a new tv?
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944 Answers
Re:
This sounds like a lamp cooling problem - maybe the lamp is faulty, but more likely the fan may have failed - this should be cheap and easy to have fixed.
Possibly the problem is with damage to the main circuit board, which would be more expensive to repair but should never come to more than about 40% of the cost of a new one.
here is the link to the manual
http://www.hdtvsolutions.com/pdf/MIT_WD-52525_WD-62525_WD-52725_WD-62725_Manual.pdf
there may be something in it you can spot yourself that sheds more light on the problem.
I would always recommend getting a set like this repaired - it is a good set and up to date.
Hope this helps :)
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It sounds like either the back light inverter board is going out or the power supply that supply the 24v for the backlight circuits is going out. Look for bad bulging capacitors first, this is typical problem for 4 years old set. I will not turn it on anymore becuase it can cause more damage if the power supply is going bad.
This should be a quick fix. Try resoldering the vertical IC. This is a small flat IC attached to a heat sink with about 11 pins. It should be marked LA7837 or something similar. That should resolve the problem.
I had this same exact issue yesterday. I own the same TV model and here is what SONY had me do to get the picture back. Ultimately the picture comes back, but it will be very dim and needs repair. Most likely a power supply issue. Try these steps:
-Press power off or leave with standby light on for 5 minutes (wait the full 5 minutes) -Unplug TV / Press top buttons 5 times each to remove static from system boards (yes, each button 5 times each) -Wait one full minute and plug TV in and press power on
Comment by Guest, posted on Oct 25, 2008My
Aquos has the same problem. I'm not sure how I discovered this, but
when I lean the TV forward and hit the power button it will turn on
every time. If the screen blacks out and I don't lean it forward when I
hit the power button, the screen will just remain blank. It is very
weird, but at least repeatable.
- Thank you, Guest. That did it. It definitely seems to be a problem with the TV. Tilting it and hitting the power button helped me get the video back.
I had this same exact issue yesterday. I own the same TV model and here is what SONY had me do to get the picture back. Ultimately the picture comes back, but it will be very dim and needs repair. Most likely a power supply issue. Try these steps:
-Press power off or leave with standby light on for 5 minutes (wait the full 5 minutes) -Unplug TV / Press top buttons 5 times each to remove static from system boards (yes, each button 5 times each) -Wait one full minute and plug TV in and press power on
The most common problem (I have fixed lots) is the Vertical amplifier has developed a loose connection. It probably just needs resoldering. As things expand it makes and looses connection you picture goes in and out. The vertical chip is a large black chip that gets hot, over time it degrades the solder until a connection is damaged. Most newer sets have a protection circuit that senses the lack of height, and shuts down the picture tube to save it. When the picture dropped to a line on older TVs and left that way too long it would burn a line into the face of the picture tube. You then had to have the picture tube replaced along with the vertical amp. it's kinda like a screensaver for your TV.
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