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Repairing a Kasino Natural Bass Amp [message #15480]

Fri, 01 April 2011 17:23

jeffamm
Messages: 6
Registered: April 2011

Junior Member

I'm repairing a Kasino Natural bass amp and would like to compare notes with someone else who knows this amp. The schematic in the chassis shows it to have a 5104 preamp and a 5033 power amp. My first focus is the power supply. Someone had tried to repair this amp before and installed one of the filter capacitors in reverse, so it outgassed when I powered it up (got a nice photo of the geyser). Beyond that, the AC transformer output is 100VAC, center tapped. That seems high to me, and the schematic doesn't indicate what it should be. Does someone know for sure? There are two reasons why it seems high to me - the filter caps are rated at 50V on the schematic, and usually I see a bigger margin. Also, the pilot light ballast resistor is rated at 5 watts and runs very hot. I measured it as having 40 volts across it, which is about 8 watts of power it is dissipating. Any comments from experience?

By the way, the guy I bought it from (non-working, $20) said that he has a lot of Kustom schematics. Are there any missing from your group collection? Maybe he has one.

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[Message index]

		Repairing a Kasino Natural Bass Amp By: jeffamm on Fri, 01 April 2011 17:23
		Re: Repairing a Kasino Natural Bass Amp By: chicagobill on Fri, 01 April 2011 17:52
		Re: Repairing a Kasino Natural Bass Amp By: jeffamm on Fri, 01 April 2011 19:06
		Re: Repairing a Kasino Natural Bass Amp By: stevem on Sat, 02 April 2011 11:19
		Re: Repairing a Kasino Natural Bass Amp By: jeffamm on Sat, 02 April 2011 15:55
		Re: Repairing a Kasino Natural Bass Amp By: chicagobill on Mon, 04 April 2011 12:54
		Re: Repairing a Kasino Natural Bass Amp By: jeffamm on Mon, 04 April 2011 14:20
		Re: Repairing a Kasino Natural Bass Amp By: chicagobill on Mon, 04 April 2011 16:39
		Re: Repairing a Kasino Natural Bass Amp By: jeffamm on Mon, 04 April 2011 22:37
		Re: Repairing a Kasino Natural Bass Amp By: chicagobill on Tue, 05 April 2011 11:59
		Re: Repairing a Kasino Natural Bass Amp By: stevem on Tue, 05 April 2011 18:55
		Re: Repairing a Kasino Natural Bass Amp By: jeffamm on Tue, 05 April 2011 20:43

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