More parts I need to replace on the VT100
cclist at sydex.com
Wed Nov 30 15:18:11 CST 2005
On 11/30/2005 at 11:25 AM Dwight K. Elvey wrote:
> Many IC's and transistors show little to no visual
>indications that they are shorted inside. I don't
>know how one can find these without understanding
>where the resistors are in the schematic and how
>the resistors are being used.
Actually, many servicepeople rely on compiled tips for servicing.
Something like "If there's no vertical sweep, replace R302, Q401 and C213".
And with a lot of modern gear, manufacturer's schematics are almost
useless, where signals disappear into a house-numbered chip with no clue as
to the function or pinout on said chip.
I confess that I've used the Euras technical database several times. For
the $5 for a 14-day ticket, it's not a bad deal and usually makes short
work of diagnosing problems on TVs.
That being said, I agree with your statement about how burned resistors are
usually a symptom of a shorted component somewhere else.
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