Quote:
Originally Posted by Chris K
Still nothing. Let me ask a couple of questions about the electrolytic cans. One of them, a double with a 40uf section and a 100uf section is grounded to the chassis. The other 2, an 80uf and a 40uf are insulated from the chassis with phenolic bases and cardboard covers. The schematic shows the positive side of these two going to ground. Is that correct?
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I think that's a typo on the schematic.If the original can is still present on chassis and has a legible label on it I would look for text stating 'can negative' or 'can positive' on the can to confirm.
Schematics have typos and aren't always the same chassis revision, in vintage electronics....An original chassis with original factory parts and wiring is just about always going to be more right than the schematic, so it's wise to recap based on what's actually in the set with the paperwork as an extra guide if you get lost or need a 30k feet view of things.
EDIT: looking at the schematic it looks like those caps form a negative supply fed by the plate of the 35W4 and are positive ground in both Riders and Sam's...I forgot about this, but it does look correct in documentation. The label on the can should help confirm.