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Home » VintageKustom.com » Repairing Kustom Amps » Kustom Studio 4V - Schematic needed (Restauration of a butchered Amp)
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Re: Kustom Studio 4V - Schematic needed [message #29259 is a reply to message #29255] Mon, 03 June 2024 06:26 Go to previous messageGo to previous message
stevem is currently offline  stevem
Messages: 4756
Registered: June 2004
Location: NY
Senior Member
Go to MusicParts.com, they list the schematic there.
You can buy right there on line and it will load to your computer so you can print it off.

Here's a guess as to what happened to the amp.
A quad of EL34s need 2.5 amps more of heater current then does a quad of 6l6tubes .
This means that the power transformer likely ran so hot that it shorted out and burned up in smoke.

Please report back with your findings and if you need help.
I quick way to test for a major short is to pull all the tubes out and install a 1 amp fuse.
If  that fuse blows at power up or when the amp is taken out of standby then you have a major short.
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