Re: Memorex MLT3221 - No Power

Instead of spinning my wheels troubleshooting individual components, I found the whole board available on shopjimmy.com for $70 and a few dollars shipping. It wasn't worth spending any more of my time checking caps in/out of circuit etc. The replacement board fixed it. If anyone wants my old board for parts (burnt traces, etc?) dated 2006, $20 and it's yours. I don't know what component is bad on it, but the largest cap on the board is very domed. On the new board, it's totally flat across the top. I suspect at the very least, that large cap will have...

Re: Memorex MLT3221 - No Power

Whole board photo...

Re: Memorex MLT3221 - No Power

They look unremarkable, really nothing domed-looking about them. Here are those photos. Thanks, -Web...

Re: Memorex MLT3221 - No Power

Here are two photos of the capacitor that I suspect may be bad. I think doming is obvious, but is it possible that it was manufactured like this?

I checked the voltage at this cap- 165V spot-on with the set on, and on the 5VSB test point, definitely 5.110 volts is present. When the set is turned on, definitely 5.110 volts on the 5V test point.

Thanks, -Web...

Re: Memorex MLT3221 - No Power

I'm working on this same TV. The red LED on the power supply board blinks about once a second when the set is on. It has sound, but the backlight does not appear to come on. The large EC2 cap has a dome on top, which I normally associate with a bad cap, but it passes doing the "reverse-the-DVM-leads-and-see-if-it-charges" test. There is no burnt odor to indicate anything really bad happened. I checked all the diodes on the front side of the board, and the zener, and they seem OK. EC17 has an ever-so-slight appearance that it may have domed....