mb9513
Junior Member
Posts: 57
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Post by mb9513 on May 3, 2017 3:54:16 GMT
Hi all, I am having a problem with a 516 amp from the 1550 double stacker. the schematic I have does not match the amp in several areas. 1st the cap from pin 6 on the 6sj7 c14 in the schematic shows a 25 mfd lytic. what is there is a .1 mfd, and that matches the .1 mfd on pin 6 of the other 6sj7. also the 1400 amp that I have has .1mfd on both of the pin 6 on 6sj7 as well as checking the schematics I have for the 1600/1650. unless someone has an other opinion I believe that the schematic is wrong. 2nd the coupling caps to the 6l6's shows pin 5 sceen grid being used. the amp has no connection on pin 5 on either 6l6. 3rd cap c18 in the schematic shows .006. but the cap that is there is a bumblebee with a rating of about .018 from what I can calculate Does anyone out there have a correct schematic for this amp? any help would be appreciated. thanks Mark
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Post by Hildegard on May 6, 2017 11:35:12 GMT
Hi Mark,
My 516 schematic in 1500 service manual shows the same value than you mention. The supplement to 1500 service manual does not offer another 516 schematic, it only offers improvements made while producing the jukebox. From what I know amp 516 was used in 1500 and 1550 models only. So I doubt there is another version of the schematic around, at least not in any other manual.
Maybe you are right and the schematic has some errors. It would not be the first one having so (and not the last I guess).
Hildegard
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