RE: Cinematronics Monitor Repair Advice

Werner,

  You will want to replace the final output transistors (the ones mounted in
the heatsink)
for the channel that the other components were burned on. It easy to tell
which heatsink as
as the connector is the one next to the 47 ohm resistor that burned. What
usually happens
is one of the final output transistors shorts and causes the other
components to burn.

Rich

-----Original Message-----
From: owner-vectorlist@synthcom.com
[mailto:owner-vectorlist@synthcom.com]On Behalf Of Werner Sharp
Sent: Thursday, September 06, 2001 6:20 PM
To: vectorlist@synthcom.com
Subject: VECTOR: Cinematronics Monitor Repair Advice

Hi all,

I'm working on getting a Tailgunner monitor running. When I got it, it
had a couple burned out components. C3 or C4 (a 2.2 uF 35v tant cap) was
popped open and R118 or R119 (a 47 ohm 1/4 watt resistor) was burnt to a
crisp. C3/C4 is right next to the 7918 voltage regulator which appear fine
(tests very similar to a 7915 anyway) and R119/R119 is right next to the
large vertical deflection transistors (which also tests out fine). I've
checked pretty much everything else on the board and nothing seems bad.

While I'm working on it (and ordering parts for it), is there anything I
should change just to make it more reliable. Should I do more of the tant
caps?

Thanks for your suggestions.

Werner Sharp
sharpw@bellsouth.net

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Received on Thu Sep 6 17:13:18 2001