On Thu, 22 Oct 1998 solarfox@texas.net wrote:
> The burnt component is R100, which turns out to be part of the
> low-voltage supply. A quick check with a VOM confirms that Q100 is
> completely shorted across both junctions...
>
> Question: is this just a random failure, or is there something else in
> the system which might _cause_ this - and thus, cause it to happen again
> once I replace the bad components in the low-voltage section - that I
> should be sure to check? (I've already tested the obvious culprits, like
> the deflection and power transistors; none of them appear to be shorted
> internally or to the chassis...)
>
It's probably just Q100, but check all the other semis in the
LV power supply, especially the zener diodes.
Q100 fails "fairly" often -- not as often as Q101...
Joe
Received on Thu Oct 22 10:07:12 1998
This archive was generated by hypermail 2.1.8 : Fri Aug 01 2003 - 00:32:42 EDT