Hello:
I have this Mitsubishi HS 421UR that has the following problem with its right audio channel.
When the machine is turned on and a tape is played, both channels work. The LEDs show sound signals on both channels. But after the machine is on for approximately 1 minute, the right channel suddenly stopped working. There is no sound coming from the right channel.
The same problem happens to the machine's tuner. During the first minute after being turned on, both channels work. Then, the right channel stopped working after around 1 minute.
Turning off the machine and leaving it off for approximately 1/2 hour, then turning it back on, I get the same problem. Both channels work for about 1 minute then the right channel dies.
What could be the cause for this problem? And how can I fix it?
Thanks.
One of the strangest things that has happened to both the consumer and the technical field has been the use of a flexible adhesive on many of these machines' circuit boards. The glue in question is vanilla-colored, and has a tendency to react to electricity by inducing capacitance, resistance, and in some cases, even causing inductance issues. The fix, of course, is to remove as much of this material as possible, and following right behind with a nylon-based retainer. Then, if the problem persists, a followup with tried and true technical procedures...accordianman
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not economically repairable
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