This NeoTec monitor was completely dead all it was doing when turn on was making a click, click, click sound. The power supply was not turning on. I took the chassis out and the first thing I noticed was that cap C423 blow up and the next thing I noticed was the B+ adjustment was turned all the way up. I am thinking that is what blow the capacitor, so I turned the B+ all the way down. Maybe the flyback is the problem and blow the cap I'm not sure yet. I put it all back together turned it on and it is working now, I turn the screen color up and it has raster. I going to hook a game up to it and see if it stays working. I checked the B+ voltage at D106 and its at 103 volts the service manual say it is supposed to be 100V.

Bad cap was here C423 684J and the original blowing up cap.

B+ adjustment R111

Raster on screen!

Components changed one, cost $1.00
C423
B+ turned down

Posted: Sun, 13 Mar 2011