Hi Tim
Thanks for the advice. Moving cards might be a way forward. Will give it a go.
On Thursday, June 11, 2015, Tim Conniff
tconno@... [yamahacs80] <
yamahacs80@...> wrote:
?
Hi Bob
?You bought a part from me a while back....
80% chance there's nothing wrong with the supply at all.?
I assume you've thoroughly investigated visual possibilities on the 2 offending voice cards, but
it's highly likely everything funky resides there.
?You MIGHT want to swap the location of a working card with one of the 2 bad ones, and see if the problem moves, because it could also be something external but related to that voice(s) giving this
?headache.??Probably 45 minutes of soldering/desoldering to verify. God knows the wiring can create nightmares on these....but at least you'd know more than you do now about the prob.
good luck
Tim
?
OK... so I'm going to build a power soak to try and pin this down. ie. whether it is actually the PSU or if it's something elsewhere causing the issue.
Measuring about 0.6A on the +15V, and 0.65A on the -15V... Does that sound about right?
