HostileHST
New User
Mar 28, 2013, 7:42 PM
Post #18 of 48
(6063 views)
Shortcut
|
Re: [HostileHST] RCA 52" convergence power supply dead
[In reply to]
|
Can't Post
|
|
BP660 is needed to turn on the power supply. The PS/0n goes through the amplifier board via that flat ribbon that goes into the amplifier board, but I did as instructed anyways. Without BP660 connected, nothing shows up on the 4 diodes. With BP660 connected, I get: DP675 -.57 vdc on the banded side DP665 +1.3 vdc on the banded side DP660 -1.9 on the blank non banded side DP670 +.6 on the blank non banded side What I can do for a test to see if the amplifier board is causing a possible short, it just run a ground and the PS/ON to the PSDF board, the board we are trying to figure out. Ultimately, no wire that powers the amplifier board will be hooked up to anything, aka no load, but at least the PSDF board will get a signal to turn on. If I don't do something in the exact order, it's not to be rebelious, I don't always get the emails quick enough to head any warnings, but rest assured, despite how I go about things, I do take pre cautions and even then, it's not always enough. Out of 25 years of being an electronics hobbiest, of all the times I've been nailed with electricity, the VERY worst was from the flash side of a digital camera and oddly enough, I knew about it, I was looking for it, but apparently it was looking for me and just about Pee'd my pants. Actually, I tossed the camera screaming words I won't repeat, lol. Oh, another thing I wondered, could I clean all the secondary solder joint on the transformer to see if the secondary could be causing a short? sort of process of elimination, but I think I will try the PS/ON idea first to make sure it's not amplifier relate. Or I'll just wait to see what Ron M, the pro says, ya, I'll just wait for your input.
|