Marantz 240 diff pairs

[Salbreth1]

Hey guys. I'm working on a 240 that is a bit of a hack job. Lots of things replaced but no consistency. different part values from the left to right amps. The rectifier solder joints were cold. and not one matching output trans on one side, lol. I could iron my cloths with it when i got it. Anyway I cant find any info on the original diff pairs. the numbers on the trans are f462 1066 422. I found some possible replacements in a few threads, but It would be nice to have the data sheet.

 

[ChrisMarantz]

Q501 and Q502 are originally Motorola SPS1928. You can use 2N5961 as a repalcement

 

[Salbreth1]

Q501 and Q502 are originally Motorola SPS1928. You can use 2N5961 as a repalcement

Thanks, I guess they have been replaced at some time. There are 1928s in other locations , but Q501 and Q502 are marked F462 on both amplifier boards.