Ok...I've looked into this further and I'm even more perplexed. It appears the heater circuit isn't working. R107 on the deflection board never gets warm. I've got AC coming in to D108 and DC (-10V) coming out of D108 and the same voltage measured at the neck board where it enters the socket for the tube heater. Keep in mind that this neck board and tube work fine with another deflection board. Anyone good enough with schematics to tell me what to look for on the down stream end of the heater circuit?
--- On Sat, 3/19/11, Malcolm Mackenzie <maxstang@sbcglobal.net> wrote:
From: Malcolm Mackenzie <maxstang@sbcglobal.net>
Subject: Unusual WG6100 Deflection Board Problem
To: "Vector List" <vectorlist@vectorlist.org>
Date: Saturday, March 19, 2011, 7:53 AM
Hey guys. I've rebuilt a few 6100 deflection boards, including the one I'm currently having a problem with. I rebuilt the low voltage section and it worked fine, so I put it in my spares pile. Just pulled it out and I'm getting no video. I hear deflection chatter, I have the correct voltages on pins 1/8 and 5 of P900, but no video. It's almost like I'm getting no Z output. Anyone with greater knowledge than I have an idea? The rest of the monitor tests good with another deflection board.
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Received on Thu Mar 24 12:08:29 2011
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