VintageKustom.com: Repairing Kustom Amps

Sun, 10 January 2016 18:51

Shaun_Musings
Messages: 323
Registered: April 2009
Location: Reading, MA

Senior Member

Okay, so the TO-39s are secure. That was why I blew the fuse; I didn't realize the little plastic washers were insulating the screws. So, those are new. Used the diode function to test for continuity.

Installed the new 4049s and 4010s, but without their heat sinks; I will be using press-on ones. Which means I had to connect a wire to where the heat sink was part of a circuit; it turns out the transistor itself is 'Base.' So that is all set; I am waiting for the press-on heat sinks.

Now, there is a resistor which started smoking and while it didn't burn up all the way, I'm not going to chance it.

There are a few other transistors on the board which need to be swapped; I'll take care of those in a bit.

The last piece is the diode. There seem to be two metal can diodes in a line, with the -->| pointing down toward the chassis; the next piece in line is the heat sink diode (1N4148TA) which I will be putting in tomorrow.

I may decide to change the big main filter caps in the future; they seem to be out of sync. I'll be going with 15,000 UF., 75 VDC...

Born on the Baaaaayou (Ok, in Massachusetts)

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