TJB wrote:

Any one help on an NEC FS5197. Has a blank screen, EHT and heaters okay,
sound is okay. I replaced Q681 which was faulty but that didn't fix the
fault. Circuit around Q681 appears okay.
(Unfortunately I don't have a schematic.)

Thanks for any help in advance
TJB

If EHT and heaters are ok, the problem must be manifesting on cathodes
or grids. (Emission so dire you cant see a thing is pretty unlikely,
but I have come across it once.) I dont see that theres anything to
suggest other than metering those and working back from them. Of course
the cause may be far away from the cathodes, possibly as far away as in
the tuner. Without a cct diag youre going to have a hard life!


NT