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Help - K200A-4 [message #29036]

Mon, 19 June 2023 16:36

JDinPA17603
Messages: 69
Registered: May 2018
Location: Lancaster, PA

Member

Currently have A4 on bench.
AC input is 122.8 volts AC
DC main rails are +42.13 and -42.17 volts DC
PC502 positive regulator board output 32.5 volts DC
PC602 negative regulator board output -32.3 volts DC
Schematic for the amp show +/- 23 volts off regulators.
Both regulator boards have been rebuilt - total component replacement.
All parts have been verified for value and installation.
Can anyone do a check on an A series amp with the 502 and 602 boards and check to see what readings they get? This difference between actual and schematics is driving me buggy.
Thanks in advance.
John

Old Us Navy Vietnam Vet
Playing for my own enjoyment and irritation of the neighbors.

[Updated on: Wed, 21 June 2023 13:17]

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Re: Help - K200A-4 [message #29037 is a reply to message #29036]

Sun, 25 June 2023 07:57

stevem
Messages: 4775
Registered: June 2004
Location: NY

Senior Member

John, if you still need the info I have one that I am getting back together this week and I can then report back to you.

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Re: Help - K200A-4 [message #29039 is a reply to message #29037]

Tue, 27 June 2023 18:09

JDinPA17603
Messages: 69
Registered: May 2018
Location: Lancaster, PA

Member

Appreciate your help on this Steve.

Old Us Navy Vietnam Vet
Playing for my own enjoyment and irritation of the neighbors.

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