Sir Roflsandwich . . . . .
Since that photo seems to be delving within the power amp section of the unit .
Take note of the L903 toroidal power inductor at the top of the magged up photo and the LARGER E-cap nearby and the probability that these are being associated with the filtering and conversion of a digitally processed audio pulse width signal back into an analog signal to feed to the speakers.
Located just below the large toroid, there are being a series string of small signal discrete parts, starting with a 4.7K (472) SM resistor near the large E-capacitor. Then it feeds to the right to the base of a SM flat pack transistor beside it to the right.. That transistors collector gets connected to one end of another 4.7K SM resistor. Then, there is the area of your missing resistor and another SM transistor over to the right.
I would venture an educated guess, that the missing resistor is also being a 4.7K SM resistor, since it would be in circuit across the base to emitter of that last meentioned transistor.
The collector of that final transistor then passes up to connect to a moderate sized diode . . . . which I can only make out as a D 8? . . .start
( BUT . . . .all of the other immediate area parts are receiving " 900" series markings assignments.
Now with all of this pointing out of circuitry aspects, take a good look all around the board and patricularly for a like toroid (s) in case this unit has more than 2 audio channels.
I really think that this specific series string circuitry will be identically replicated elsewhere, and you should be able to read the "like" resistor in other circuitry, since what are the odds of another being damaged. PLUS it does take some SERIOUSLY high voltage across it to tickle some 4700 ohms of resistance.
Now . . . . . CHECKITOUT . . . . . ! ! ! !
PLUS . . . . . ADDITIONALLY . . . . . like in the Clint Eastwood movie . . . . . . I jes' gots to knoes !
I am looking at EVERY little area of the foils on this little snippet of a photo, and every where, I am seeing black deposits akin to cockroach deteris, and MORE IMPORTANTLY, the MULTIPLE areas of bared copper foils that are open air exposed.
Below the large E-cap, board edge, there is also corrosive foil "creep" entering at the edges of the board, going in under its conformal coating.
Where the HELL has this unit been during the last 13 years of its life ?
Parked above a toxic envionmental dump . . . . with noxious sulphuric and nitrogen acid fumes wafting thru the air ?
BUT, if purchased from a junk yard . . . . . with packed dirt surfaces and who knows what fluids being constantly poured into them,
THAT condition could constitute a hazardous site !
73's de Edd . . . . .
Well, I finally POSITIVELY-ABSOLUTELY had to have them replace the metal plate in my head with a Teflon one.
Every time the wife would rev up the microwave, I'd wet my pants, purge my bowels and also forget where and who I was for about half an hour or so..
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