Question about RCA RT2500 System

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No sound from speakers

I was given a rt2500 because it was buzzing through the speakers for 20 - 25 minutes till it warmed up. I found a post on this site about this problem and I replaced the 2 caps. that they said to replace and that took care of the buzz.However, when I hooked up the 2 front speakers and turned on the tuner I could barely here anything with the volume up all the way and what I could here kept cutting in and out.I checked the fuses and found that F106 and F107 were blown,I replaced them and then I got a lttle more sound but it still kept cutting in and out and then the fuses both blew again.
Please any help would be great. Thanks

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Hi,

On similar incidents, it would seem that the "finals" and some other components developed cold solder connections to the PCB. This of course would require re-heating with the use of a soldering iron. You may want to start with the brick looking transformer, the "finals" (underneath the big heatsink), power connectors and the relay.

From what I understand, this particular brand/model is susceptible to power outages or strong fluctuations hence you may want to use a surge suppressor once fixed.

After a repair/rework, it may be necessary to trick the unit into a reset. Hold the power button while unplugging the unit and plugging back in to the mains immediately.

All of the above would require that you be familiar/comfortable working with electronics circuitry and components, use of a DVM and soldering iron. Should this be not the case, perhaps your best bet would be to seek the services of a professional electronics/audio technician. In some instances, the cost of repair negate justification and perhaps a replacement may be the way to go.

Hope this be of some help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Posted on Feb 01, 2008

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The power supply unit has a problem... find the power sources and check the voltage, to determine the correct voltage see the capacitor's or Fuse voltage and compare it, source must not be higher than what is printed there.

Hope this helps.

Posted on Feb 01, 2008

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Usually when caps are bad u can rest assure a resistor or diode in same area is bad also.most likey a res. look 4 burnt resistors

Posted on Feb 01, 2008

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HI,

This problem is CURED simply by replacing 2 capacitors inside on the main board. They are easily identified by a bulge on the top end of the capacitors. The capacitors are located between the heat sinks. The size is 6800uf/16v.
I bought one for myself. I have repaired only 2 that had the same problem as listed by above. They both are working great and for the record. . .are NOT pieces of JUNK,. . .hehe. . .they just need a little TLC. Parts available from larger electronics parts houses, not at RadioShack

You can even get the parts from www.partstore.com

Goodluck,
Don't forget to rate me as fixya..

Posted on Feb 01, 2008

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