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Kustom 200 B1 blowing fuses [message #21094]

Sun, 10 August 2014 09:22

Tone Meister
Messages: 42
Registered: August 2014
Location: NC

Member

Hi, using my first post seeking information on a 200 B1 that is/was blowing fuses. Amp serial number is 59412, no tremolo or reverb. Power amp board is PC703 but I haven't pulled either preamp board so I haven't yet determined exactly which boards they are.

The amp had been sitting for years and was blowing fuses upon power up. Found a shorted driver transistor (38736 = RCA 40409) and was able to source some NOS replacements for all the driver transistors, RCA 40409 and 40410.

There is at least one output that is shorted, so I want to just refurbish the power board and both preamp boards while I have it open. I plan to use 2N3055 replacements unless there is a better choice these days. Please don't suggest the NTE130MP because they cost 20X what I'd have to pay for the 2N3055s.

The main filter caps are good, but I do want to swap out all the tantalum caps on all the boards and all the driver and output transistors, plus the 1 ohm 5 watt resistors. Is there a definitive parts list for these amps, or does someone have parts suggestions for a solid, basic circuit overhaul without going too far overboard? I just want to make the amp functional and reliable.

Any parts suggestions or technical recommendations are welcome.

Thanks in advance.

-Stan

[Updated on: Sun, 10 August 2014 10:35]

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[Message index]

		Kustom 200 B1 blowing fuses By: Tone Meister on Sun, 10 August 2014 09:22
		Re: Kustom 200 B1 blowing fuses By: stevem on Sun, 10 August 2014 11:50
		Re: Kustom 200 B1 blowing fuses By: daveobergoenner@gmail.com on Sun, 10 August 2014 12:51
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Sun, 10 August 2014 15:03
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Sun, 10 August 2014 16:32
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Sun, 10 August 2014 16:47
		Re: Kustom 200 B1 blowing fuses By: stevem on Sun, 10 August 2014 18:25
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Sun, 10 August 2014 18:52
		Re: Kustom 200 B1 blowing fuses By: stevem on Sun, 10 August 2014 19:10
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Sun, 10 August 2014 22:34
		Re: Kustom 200 B1 blowing fuses By: stevem on Mon, 11 August 2014 08:20
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Wed, 13 August 2014 15:08
		Re: Kustom 200 B1 - still has dead short after overhaul By: Tone Meister on Tue, 23 September 2014 10:01
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Tue, 23 September 2014 16:12
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Tue, 23 September 2014 16:43
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Tue, 23 September 2014 17:39
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Wed, 24 September 2014 11:34
		Re: Kustom 200 B1 blowing fuses By: stevem on Wed, 24 September 2014 11:58
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Wed, 24 September 2014 12:06
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Wed, 24 September 2014 12:30
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Wed, 24 September 2014 13:21
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Wed, 24 September 2014 18:08
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Wed, 24 September 2014 18:24
		Re: Kustom 200 B1 blowing fuses By: stevem on Wed, 24 September 2014 18:43
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Thu, 25 September 2014 09:44
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Thu, 25 September 2014 13:23
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Thu, 25 September 2014 13:25
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Thu, 25 September 2014 14:55
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Thu, 25 September 2014 13:13
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Thu, 25 September 2014 16:45
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Thu, 25 September 2014 21:25
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Fri, 26 September 2014 12:53
		Re: Kustom 200 B1 blowing fuses By: stevem on Fri, 26 September 2014 14:36
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Thu, 02 October 2014 14:07
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Thu, 02 October 2014 14:22
		Re: Kustom 200 B1 blowing fuses By: pleat on Thu, 02 October 2014 18:49
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Thu, 02 October 2014 18:51
		Re: Kustom 200 B1 blowing fuses By: Kustom_Bart on Sat, 11 October 2014 02:28
		Re: Kustom 200 B1 blowing fuses By: stevem on Thu, 02 October 2014 17:05
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Thu, 02 October 2014 17:20
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Thu, 02 October 2014 18:05
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Thu, 02 October 2014 18:12
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Thu, 02 October 2014 21:30
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Fri, 03 October 2014 07:55
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Fri, 03 October 2014 07:23
		Re: Kustom 200 B1 blowing fuses By: stevem on Fri, 03 October 2014 08:35
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Fri, 03 October 2014 12:02
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Fri, 03 October 2014 12:09
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Fri, 03 October 2014 14:13
		Re: Kustom 200 B1 blowing fuses By: stevem on Fri, 03 October 2014 15:18
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Fri, 03 October 2014 15:37
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Fri, 03 October 2014 15:47
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Fri, 03 October 2014 16:27
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Fri, 03 October 2014 17:34
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Fri, 03 October 2014 18:01
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Fri, 03 October 2014 18:06
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Fri, 03 October 2014 18:34
		Re: Kustom 200 B1 blowing fuses By: stevem on Fri, 03 October 2014 20:22
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Fri, 03 October 2014 21:23
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Sat, 04 October 2014 11:57
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Sat, 04 October 2014 12:09
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Mon, 06 October 2014 19:23
		Re: Kustom 200 B1 blowing fuses By: stevem on Tue, 07 October 2014 07:04
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Tue, 07 October 2014 07:38
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Tue, 07 October 2014 12:45
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Wed, 08 October 2014 11:20
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Wed, 08 October 2014 13:06
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Wed, 08 October 2014 14:42
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Wed, 08 October 2014 16:32
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Wed, 08 October 2014 17:54
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Wed, 08 October 2014 19:16
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Wed, 08 October 2014 19:46
		Re: Kustom 200 B1 blowing fuses By: chicagobill on Wed, 08 October 2014 20:56
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Wed, 08 October 2014 21:14
		Re: Kustom 200 B1 blowing fuses By: stevem on Thu, 09 October 2014 06:18
		Re: Kustom 200 B1 blowing fuses By: Tone Meister on Sat, 18 October 2014 10:04
		Re: Kustom 200 B1 blowing fuses By: stevem on Sat, 18 October 2014 17:54

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