Originally Posted by kasanami
...Are there any thoughts about what might be wrong with my TV?
When you said you were "too cheap to spend money on taking it to the shop", I took what you said literally. However, I get the sense you are more than willing to spend a bit of money and time on the TV, knowing full well you may spend more on unnecessary parts without the safety net of a certified repairman. Additionally, I gather it is more of a matter of principle or perhaps you want to take it on as a hobby or a sense of accomplishment. If that is what you really want to do, then you are not "cheap", because short of a couple straightforward general maintenance repairs, trying to repair this set through trial-and-error will not be "cheap".
The couple of maintenance issues to which I was referring are with regard to the lamp and ballast. A good ballast will have trouble firing an aging lamp. Once the lamp is lit, the picture may very well look good. By contrast a failing lamp will have trouble firing up even a new lamp. Additionally, a failing ballast will shorten the lifespan of a good lamp. If the lamp fails to fire altogether, the TV will attempt 3 times to restart. At this point, I'm not sure if you would still get sound without a picture as you are experiencing. Temporary sound, maybe, but I don't believe the TV will continue to run when I doesn't detect the lamp having fired---unless it is a video board failure
. So, if you are getting sound with no video for an indefinite amount of time, I would be highly suspicious of a failing video board.
Otherwise, I would do the following:
- Reset the TV: Unplug it--> Hold down power button for 30 sec. -->Plug it back in.
- Replace the lamp with a new OEM lamp.
- Ensure the blue safety switch on the lamp door is secure such that it is in the down position when the door is closed. I would just tape it down to make sure.
- If still no joy, I would replace the ballast. (a simple procedure and the ballast can probably be had for less than $80).
After doing the aforementioned, I would spend no more money
on this TV without taking it to a repair shop. At this point, you've essentially done some general maintenance on parts that are likely reaching their end of life anyway.