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Re: K200A-1 Power Amp Rescue Needed [message #27270 is a reply to message #27251]

Tue, 23 April 2019 06:14

stevem
Messages: 4733
Registered: June 2004
Location: NY

Senior Member

This is very very strange because you have a A series 200 that is built like a A series k 400 in regards to the preamps being power by only a positive 23 volts.
It seems all the ones I have ever worked on in the passed 45 years have had the two regulatiors in them!

My factory supplied dealer schematics for the K 200A show it as having the 502 and 602 board that I have been talking about here!

Just a note on the bias string diodes in that at times I have had them test good on a meter, but break down under voltages higher then the meter applies to them.

It's best to confirm them good by hooking them up to the 34 volt supply and see if they block it.

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[Message index]

		K200A-1 Power Amp Rescue Needed By: thetragichero on Fri, 19 April 2019 13:28
		Re: K200A-1 Power Amp Rescue Needed By: stevem on Sat, 20 April 2019 06:20
		Re: K200A-1 Power Amp Rescue Needed By: chicagobill on Sat, 20 April 2019 12:59
		Re: K200A-1 Power Amp Rescue Needed By: JDinPA17603 on Sat, 20 April 2019 15:10
		Re: K200A-1 Power Amp Rescue Needed By: chicagobill on Sat, 20 April 2019 22:09
		Re: K200A-1 Power Amp Rescue Needed By: stevem on Sun, 21 April 2019 06:06
		Re: K200A-1 Power Amp Rescue Needed By: JDinPA17603 on Mon, 22 April 2019 02:41
		Re: K200A-1 Power Amp Rescue Needed By: stevem on Mon, 22 April 2019 06:09
		Re: K200A-1 Power Amp Rescue Needed By: JDinPA17603 on Mon, 22 April 2019 10:27
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Mon, 22 April 2019 11:27
		Re: K200A-1 Power Amp Rescue Needed By: stevem on Mon, 22 April 2019 12:19
		Re: K200A-1 Power Amp Rescue Needed By: JDinPA17603 on Mon, 22 April 2019 12:39
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Mon, 22 April 2019 23:47
		Re: K200A-1 Power Amp Rescue Needed By: stevem on Tue, 23 April 2019 06:14
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Thu, 25 April 2019 10:11
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Thu, 25 April 2019 12:27
		Re: K200A-1 Power Amp Rescue Needed By: chicagobill on Thu, 25 April 2019 13:18
		Re: K200A-1 Power Amp Rescue Needed By: JDinPA17603 on Thu, 25 April 2019 14:10
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Thu, 25 April 2019 14:17
		Re: K200A-1 Power Amp Rescue Needed By: JDinPA17603 on Thu, 25 April 2019 14:48
		Re: K200A-1 Power Amp Rescue Needed By: chicagobill on Thu, 25 April 2019 15:21
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Thu, 25 April 2019 16:28
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Sat, 27 April 2019 22:20
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Sun, 28 April 2019 00:14
		Re: K200A-1 Power Amp Rescue Needed By: stevem on Sun, 28 April 2019 06:04
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Sun, 28 April 2019 09:34
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Wed, 08 May 2019 00:51
		Re: K200A-1 Power Amp Rescue Needed By: JDinPA17603 on Wed, 08 May 2019 18:39
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Thu, 09 May 2019 17:31
		Re: K200A-1 Power Amp Rescue Needed By: chicagobill on Fri, 10 May 2019 12:07
		Re: K200A-1 Power Amp Rescue Needed By: stevem on Fri, 10 May 2019 12:17
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Wed, 15 May 2019 12:20
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Fri, 17 May 2019 16:46
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Fri, 17 May 2019 19:47
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Fri, 17 May 2019 21:46
		Re: K200A-1 Power Amp Rescue Needed By: stevem on Sat, 18 May 2019 05:54
		Re: K200A-1 Power Amp Rescue Needed By: thetragichero on Sat, 18 May 2019 10:40
		Re: K200A-1 Power Amp Rescue Needed By: stevem on Sun, 19 May 2019 05:54
		Re: K200A-1 Power Amp Rescue Needed By: JDinPA17603 on Sun, 19 May 2019 08:37

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