Presets stopped working
posted by sound2280 on Jun 21, 2008
Preset function doesn't set the presets, and the tuner doesn't stop on powerful stations. It remains set on various, seemingly random FM and Am stations.
When you click the stations manually to a good station, it sounds great. All other functions seem ok, though I haven't gone through very many functions.
Comment by sound2280, posted on Jun 23, 2008
Thanks Tech48.
I happen to have been in elecronics a long time too, and I understand what you're saying.
When I get a chance, I'll see if cold solder joints are the problem.
The unit had been unplugged for a couple of days, so that isn't the likely problem, but I might try again just to make sure.
I appreciate the thoughtful explanation.
I happen to have been in elecronics a long time too, and I understand what you're saying.
When I get a chance, I'll see if cold solder joints are the problem.
The unit had been unplugged for a couple of days, so that isn't the likely problem, but I might try again just to make sure.
I appreciate the thoughtful explanation.
Best Solution
posted on Jun 22, 2008
GuruI have repaired a few of these receivers in the past few years and have found several with microprocessor issues and some with a lot of heat stressed solder connections on the main amplifiers board around the voltage regulators.
The problem you are having is similar to problems the others I have repaired were having.
There is nothing you can, as an end user, do beyond a hard reset of the microprocessor by unplugging the unit from the wall and wait about an hour or 2 before you plug it back in.
By resetting the microprocessor you can at least see if the problem is a minor one or not. most likely it is an electronic problem that will take some good troubleshooting skills.
The bigger problem you face with this particular unit is that RCA no longer supplies parts for the audio equipment they sell.
Once the supply of what they have in stock is gone, thats it, no more parts at all for RCA audio. That supply has not been replenished in around a year.
All of the RCA audio equipment sold now is exchange only if it is under warranty.
I know this because I work at an authorized RCA repair center and I am the audio tech. I have not repaired an RCA audio unit under warranty in about a year because of that.
I have fixed 3 or 4 of the same unit you have, but not under warranty.
If you or somebody you know has very good soldering skills you can try reflowing the solder connections on the main board and even reflowing the microprocessor. It could solve your problem, but not advisable unless you are very good with a soldering iron and have done this sort of thing before.
I am sorry for this rather bad news, but it is true. I have been repairing audio equipment for over 17 years and am very familiar with RCA products.
If I can be of any further help please let me know.
The problem you are having is similar to problems the others I have repaired were having.
There is nothing you can, as an end user, do beyond a hard reset of the microprocessor by unplugging the unit from the wall and wait about an hour or 2 before you plug it back in.
By resetting the microprocessor you can at least see if the problem is a minor one or not. most likely it is an electronic problem that will take some good troubleshooting skills.
The bigger problem you face with this particular unit is that RCA no longer supplies parts for the audio equipment they sell.
Once the supply of what they have in stock is gone, thats it, no more parts at all for RCA audio. That supply has not been replenished in around a year.
All of the RCA audio equipment sold now is exchange only if it is under warranty.
I know this because I work at an authorized RCA repair center and I am the audio tech. I have not repaired an RCA audio unit under warranty in about a year because of that.
I have fixed 3 or 4 of the same unit you have, but not under warranty.
If you or somebody you know has very good soldering skills you can try reflowing the solder connections on the main board and even reflowing the microprocessor. It could solve your problem, but not advisable unless you are very good with a soldering iron and have done this sort of thing before.
I am sorry for this rather bad news, but it is true. I have been repairing audio equipment for over 17 years and am very familiar with RCA products.
If I can be of any further help please let me know.
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