I need assistance in finding the value of several parts in a Quasar TV/VCR
combo.
R802, a 3-watt 5.6 power resistor is open, and several other parts are
questionable.

R804 - burned 1/2? watt resistor
R421 - questionable
R806 - questionable
D851 - questionable

What in the heck is D851?
I would assume (I shouldn't) that it is a diode from the PCB ID number, but
the symbol on the PCB doesn't match, and the ohmmeter shows the same reading
no matter which way the test leads are connected.

Thanks in advance for any help you can give.
-Mike

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