On Sun, 19 Feb 2012, Dave McGuire wrote:
Much of the
time a controlelr that buzzes/chatters has a dried-up
smoothing capacitr for the supply to the control electronics. I'd
check any sizeable electrolytics first.
That makes sense; they're pretty simple. I'll yank it and check
those capacitors, that's what I was figuring it was anyway, but I
generally like to have schematics (if possible) before tearing into
something.
I should probably find a service manual for my Sony VPC-1272 projector;
it's power supply intermittently sings in the most annoying way. Like,
louder than the projector's fans.
Dave, I see you have your license again; interesting choice of a vanity
call.
--
Kris Kirby, KE4AHR
Disinformation Analyst