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Re: Kustom III PA [message #22792 is a reply to message #22767]

Thu, 23 April 2015 15:05

Autoharp
Messages: 14
Registered: April 2015
Location: Warren, MI

Junior Member

The reason it is disconnected is that the lead seems to have simply broken off. And I stand corrected, it was the base, not the emitter.

I've also gone over the board, I'd post pictures if I was allowed to. The 10 ohm / 33 ohm resistor mashup is in place of diode CR1. Interestingly enough, the schematics for the 5065 and 5029 modules all agree - CR3 (1N3754) is mounted in a clip on the heat sink and CR1 and CR2 (1N3193) are mounted on the board, but actually CR2 & CR3 are 1N3754 and are mounted in clips on the heat sink and CR1 should be mounted on the board but it has been swapped with the resistors.

So I am going to replace the resistors with a 1N4148 (I have lots of them), test the 1N3754s, test the output transistors, fix the broken base lead, put it back together, then tune for maximum smoke. (just kidding on the last part)

I'll let you guys know how it goes.

Autoharp Bill
Beautiful Downtown
Warren, Michigan
USA

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[Message index]

		Kustom III PA By: Autoharp on Sun, 19 April 2015 00:02
		Re: Kustom III PA By: chicagobill on Sun, 19 April 2015 02:48
		Re: Kustom III PA By: stevem on Sun, 19 April 2015 06:55
		Re: Kustom III PA By: Autoharp on Tue, 21 April 2015 09:20
		Re: Kustom III PA By: Autoharp on Mon, 20 April 2015 12:10
		Re: Kustom III PA By: stevem on Mon, 20 April 2015 12:41
		Re: Kustom III PA By: Autoharp on Tue, 21 April 2015 09:10
		Re: Kustom III PA By: chicagobill on Tue, 21 April 2015 11:24
		Re: Kustom III PA By: stevem on Tue, 21 April 2015 13:05
		Re: Kustom III PA By: Autoharp on Tue, 21 April 2015 14:03
		Re: Kustom III PA By: chicagobill on Tue, 21 April 2015 14:11
		Re: Kustom III PA By: Autoharp on Tue, 21 April 2015 22:42
		Re: Kustom III PA By: Autoharp on Wed, 22 April 2015 09:37
		Re: Kustom III PA By: chicagobill on Wed, 22 April 2015 13:22
		Re: Kustom III PA By: Autoharp on Wed, 22 April 2015 16:11
		Re: Kustom III PA By: chicagobill on Wed, 22 April 2015 17:29
		Re: Kustom III PA By: Autoharp on Thu, 23 April 2015 15:05
		Re: Kustom III PA By: chicagobill on Thu, 23 April 2015 15:32
		Re: Kustom III PA By: Autoharp on Thu, 23 April 2015 22:27
		Re: Kustom III PA By: chicagobill on Fri, 24 April 2015 01:10
		Re: Kustom III PA By: stevem on Fri, 24 April 2015 06:18
		Re: Kustom III PA By: Autoharp on Fri, 24 April 2015 16:54
		Re: Kustom III PA By: stevem on Sat, 25 April 2015 06:54
		Re: Kustom III PA By: Autoharp on Sun, 14 June 2015 21:05
		Re: Kustom III PA By: Autoharp on Sun, 14 June 2015 23:54
		Re: Kustom III PA By: stevem on Mon, 15 June 2015 06:26
		Re: Kustom III PA By: Autoharp on Wed, 17 June 2015 02:16
		Re: Kustom III PA By: stevem on Wed, 17 June 2015 06:17

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