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Re: reverb issue [message #13312 is a reply to message #13303]

Sun, 28 March 2010 22:19

cassent5150
Messages: 341
Registered: August 2009

Senior Member

I just put the reverb board back in the k100 and hooked up a good reverb tank and have spring sound loud and clear if you tap on the tank. There is no reverb effect getting through from the preamps. Checking against your readings, most of mine are close or above with the exception of Q-801. I'm way off at the collector. I'm getting -8.8 and +9.0 on the voltage supply lines and the readings I get from Q-801 are E= -7.95 B=-7.24 C= -7.46 there is a resistor and cap hooked to the collector and R829 registers 1.1K and the cap is not shorted. I already replaced the transistors in this section with those 2N5089 and pin them according to the data sheet. My multimeter has a transistor tester of some sort on it. There's a square box for inserting these small 3 pin transistors, the top half for NPN and the bottom for PNP. It gave me a hfe reading in the E/B/C direction of 684. Guess I'll replace that cap and resistor next.

Steve C

[Updated on: Sun, 28 March 2010 22:21]

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[Message index]

		reverb issue By: cassent5150 on Tue, 23 March 2010 08:41
		Re: reverb issue By: chicagobill on Tue, 23 March 2010 14:51
		Re: reverb issue By: cassent5150 on Wed, 24 March 2010 23:28
		Re: reverb issue By: stevem on Tue, 23 March 2010 16:41
		Re: reverb issue By: cassent5150 on Wed, 24 March 2010 22:57
		Re: reverb issue By: stevem on Thu, 25 March 2010 06:33
		Re: reverb issue By: cassent5150 on Thu, 25 March 2010 20:12
		Re: reverb issue By: chicagobill on Thu, 25 March 2010 16:53
		Re: reverb issue By: cassent5150 on Thu, 25 March 2010 18:06
		Re: reverb issue By: chicagobill on Fri, 26 March 2010 12:18
		Re: reverb issue By: cassent5150 on Fri, 26 March 2010 20:20
		Re: reverb issue By: chicagobill on Sat, 27 March 2010 12:01
		Re: reverb issue By: cassent5150 on Sun, 28 March 2010 13:24
		Re: reverb issue By: stevem on Sun, 28 March 2010 10:29
		Re: reverb issue By: cassent5150 on Sun, 28 March 2010 13:30
		Re: reverb issue By: cassent5150 on Sun, 28 March 2010 22:19
		Re: reverb issue By: stevem on Sun, 28 March 2010 13:33
		Re: reverb issue By: cassent5150 on Sun, 28 March 2010 13:36
		Re: reverb issue By: stevem on Sun, 28 March 2010 13:45
		Re: reverb issue By: stevem on Mon, 29 March 2010 06:01
		Re: reverb issue By: chicagobill on Mon, 29 March 2010 13:03
		Re: reverb issue By: cassent5150 on Mon, 29 March 2010 21:40
		Re: reverb issue By: stevem on Mon, 29 March 2010 13:08
		Re: reverb issue By: chicagobill on Tue, 30 March 2010 11:28
		Re: reverb issue By: stevem on Tue, 30 March 2010 11:38
		Re: reverb issue By: stevem on Tue, 30 March 2010 12:59

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