(George) writes:

20" White Westinghouse
TV Model WVT-61901
Year Jan 1999

Will not power up. Just stopped working one day. Brought down to
workshop, plugged it in and it worked. Back upstairs and wouldn't
work next morning. Now won't power up at all.

Checked bridge...ok. Found 5W 1.8K power resistor that reads 2.5K.
Is this normal for these large resistors to be off by so much? It
feeds a zener and capacitor circuit so i'm thinking it's part of some
low voltage circuit which might explain the problem ??

Did you disconnect at least one end of the resistor? It might be open
and you're the resistance of other parts in the circuit.

Resistors shouldn't be that far off. However, I doubt the incorrect
resistance is the problem. Did you actually check that the resistor
is marked 1.8K? Often, the manufacturer will put in a part with a
different value than in the schematics or labeled on the PCB as a design
fix or improvement.

Assuming the resistor itself is marked 1.8K, then it's likely changed
value due to overheating or some other cause. Have you checked the
zener and any other parts it's feeding?

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