My tv is doing all sorts of things. Here is the list.
- Will not turn off (has to be unplugged) - Makes popping sound through speakers (like a heart beat, low thump) - Stop responding to remote commands (the menu will show and navigate, but the tv never actually does what you tell it to) - Will not switch inputs (it will show that it is changing from 1 to 2 to 3, but the picture freezes from the last input it was on, until you get back to that input and it will resolve start back displaying that source. It never actually does display and of the other sources.
I know the sources work correctly b/c I have tested them on another set.
The tv only does this from time to time. Sometimes I can watch it all day and it does not do this, and sometimes it's on for 5 mins and starts acting up. So far the only solution is to unplug the power cord and plug it back in to get it to start responding again.
I had a 5 year warranty on the TV, so a tech has worked on it a few times. To date we have replaced the light engine (for a ghosting issue that was corrected), the A-1300-698-A, & A-1300-697-A boards but this has not corrected the issue. They finally decided to give me a new TV, but I get to keep the old one. I would like to try and fix it, and from what I can tell I think the next board to try would be the M board (A-1300-699-A). What are your thoughts?
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The first thing you should look into is the Z-SUS board, the one situated on the right side viewed from the rear. This board develops a high voltage during operation that might be the source of the popping sound. It is also responsible in refreshing the panel for proper picture display. The weird colors on your TV indicates a faulty Z-SUS board. Note: Unplug the TV and wait for at least five minutes in order to allow the voltages to drain before you disconnect or reconnect any connector.
Disconnect the Z-SUS board from the Y-SUS board. The Z-SUS board is situated on the right side viewed from the rear of the TV while the Y-SUS is on the left.
Plug the TV back and turn it on.
You will still be able to see the weird colors the moment the TV shut off but do not flash. If it does not pop and stays on and there's a sound, you are pretty sure the Z-SUS board is faulty. Replace it.
If it still pops and shuts off, disconnect the Y-SUS board from the power supply. The Y-SUS board also develops a high voltage during operation. The power supply is the one right between the Z and Y-SUS boards.
Re-apply AC power then turn the TV on.
You'll not be able to see any color or video. If it does not pop and stays on with sound, you have a faulty Y-SUS board, replace it.
If it still pops and shuts off, please let me know.
Feel free to update me of the result and your own findings.
I don't like to post anything without some kind sort of solution but this one's been tough.
For a list of what seems to be a chronic issue with RCA. I included a list. http://www.netnoise.com/boycott_rca/rcabook2007-8.html
I did come across these two posts, hope it helps.
"well people don't be afraid all you have to do is to change a Horizontal
out put transistor D3402 and that all is common problem I am a tv
technician and already know that this kind of problem is normal good luck"
"It is the front panel on the tv (button panel). I took my friends tv apart and unplugged the button panel from the circuit board
before it turned it's self off and the tv worked fine. It didn't turn
off and on or change channels on it's own. The problem that I found is
that this part is hard to find,online anyway. It can be fixed by a
repair shop, but they will want to charge you 100.00+ dollars to it.
It's simple to take apart and simple to install. The Tv is already
messed up anyway, why not give it a shot if you think you can."
The first thing to check is for dry solder joints on all parts of the circuit board you are having problems with, but as for that popping sound more often than not it is caused by a faulty capacitor somewhere. Hope this helps.