07-16-2014, 08:40 PM
Dan, you can get a much better schematic and all the service bulletin info from Chuck for just a few bucks...well worth it. See: http://www.philcorepairbench.com/schematics.htm .
Lots of info on the block capacitors can be found at: http://www.philcoradio.com/tech/blocks.htm
I've not worked on a 650 so others with actual experience will surely chime in to help you as you go along but looking at the schematic it looks like only the 10uF section of cap#77 is grounded to the chassis. The 8uF section of #77 and also the 8uF #78 are not grounded.
Lots of info on the block capacitors can be found at: http://www.philcoradio.com/tech/blocks.htm
I've not worked on a 650 so others with actual experience will surely chime in to help you as you go along but looking at the schematic it looks like only the 10uF section of cap#77 is grounded to the chassis. The 8uF section of #77 and also the 8uF #78 are not grounded.
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