Perq 2T1 display fault

From: Tony Duell <>
Date: Sat Feb 21 17:07:35 2004

Jules mentioned to me by e-mail that the blanking pattern is not stable,
and that there's a lot of ripple on the output of the 48V regulator in
the monitor. These 2 observations must be connected :-) -- it sounds like
excessive power ripple is upsetting the monitor's video circuity.

I would therefore check :

The 2 capactiors -- particularly the 0.1uF one -- on the regulator PCB
(on the back of the heatsink).

The following capacitors on the monitor main PCB :

C11 (47uF)
C10 (10uF)
C2 (1000uF)
C19 (47uF)
C3 (1000uF)

C3 (47uF) on the CRT base PCB

Received on Sat Feb 21 2004 - 17:07:35 GMT

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