| Re: Kustom Semiconductor Replacements [message #15232 is a reply to message #8620] |
Tue, 08 February 2011 12:03   |
chicagobill
Messages: 2005
Registered: April 2003
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Senior Member |
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Welcome to the place.
The part that you are asking about is the full wave bridge rectifier module, that is part of the power supply in your amp. The original ones I believe were made by Westinghouse and are no longer available. This is not a problem though as there are many substitutes available that will equal or surpass the original specifications.
You need a part rated at minimum for 100 volts and 3 amps. I normally use a part rated for 400 volts and 25 amps as a replacement for these. The only problem with this replacement plan is that the push on connectors in the amp need to either be replaced with larger ones or removed and the wires soldered directly to the terminals on the new rectifier bridge.
You will find a variety of rectifier bridges at any major electronics distributor like Mouser, Digikey, Jameco, etc. I know in the past even Radio Shack carried a suitable replacement, but I haven't been there in awhile so I don't know if that is true or not anymore.
When you mount the replacement to the chassis be sure to clean the metal surface and to add a dab of heatsink compound to the rectifier case to aid in cooling. Then just be certain that the transformer wires connect to the correct AC input terminals and that the positive and negative DC lines to the filter caps are correct.
Hope this helps.
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