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Re: RCA RT2280/RT2250 RECEIVER
If you have speaker wires that have strands, you may be getting a short if one small strand is shorting across the terminals, or a poor connection. Check carefully, perhaps even by disconnecting and reconnecting the wires.
Also check for proper polarity - positive to positive, negative to negative. (unlikely since it just started).
You can also get a new set of wires and check speakers one at a time to see if it goes away. or get another speaker that works and then replace each one with that speaker in turn to see if it resolves it.
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"CHK SPKR" Check Speakers. Remove all speaker wires and turn on receiver. If it still says check speakers, you have an amp that needs output transistors or possibly just soldering of an emitter resistor but thats rare.
That message means that you have a bad speaker or you have a bad amplifier IC most of the time. The amp circuit could have some other problem, but more times than not it is the amp IC.
How to check if it is the speakers or the amp circuit:
Unplug the speakers and turn it on. if you do not get the error message you have a bad speaker. If you do get the error message you have an internal amp problem. Then start plugging in speakers one at a time. If the unit turns on and stays on for a few minutes, turn it off and then plug in one more speaker. Keep doing this unit the unit gets the error message and when it gets that message you know that the last speaker you plugged in is the bad one.
Now the bad news
RCA no longer sells parts for their audio equipment. When the supply they have on hand right now is gone, thats it, no more RCA parts.
Now the good news.
The amp IC they use is a generic type that you may be able to get from another source.
But that is only good news if the amp IC is bad. It is the likely suspect, but without troubleshooting it on a test bench with the proper equipment, that can only be a good guess.
If you have found this help to you a good rating would be really appreciated.
hook up the antenna at the back and try to tune-in to your favorite radio station.
read the description at the back of your rca rt2250, how to connect your antenna.
connect it properly and raise up the antenna, put it where the signal is good.
I have the same problem... I read that it can be a capacitor issue, they are on backwards. I just dropped mine off with the repair guy today... Does anyone know of a fix? Mine first had an electrical zap, then smoked, now CHCK SPEAKERS then off, and on standby...
Your problem is the output IC's The case where you say the speakers buzz tells you theres a short in the audio outputs. If your unit didnt shut off, the speakers would fry and the unit would also smoke. These are solid state devices and are soldered in, and are not concidered user serviceable parts, unless you know how to solder and trouble shoot Stereo systems. This is a job for the pro if you want it fixed. Good Luck