Toshiba 40E200U1 Power Supply Not Turning On

[budm]

Re: Toshiba 40E200U1 Power Supply Not Turning On

It is strange that you force the PS-ON and you still did not get the 12V or 24V.

[mmartell]

Re: Toshiba 40E200U1 Power Supply Not Turning On

Snipped off the heatsink (heatshield?) and threw some heat at the bga. The wand from this station of mine is pretty ineffective over larger areas so probably didn't melt the balls but is working again atm. Glued a small heatsink to it and will do an extended burn-in. If it should fail will use the big daddy heat gun which will either cure it or kill it for good lol.

[freakaftr8]

Re: Toshiba 40E200U1 Power Supply Not Turning On

Cool good to hear

[mmartell]

Re: Toshiba 40E200U1 Power Supply Not Turning On

Well it began to exhibit the same symptoms and so... I killed it. Gave it enough heat the processor should have levitated but the damn thing didn't budge ! But in the end it was dead, there was only 100k ohm between the 5vsb and ground, which seems low as the other rails show many M ohms. And some of the caps under the uP are showing shorted, even after removal.

So I guess now I am in the market for a main board for this unit.

[mmartell]

Re: Toshiba 40E200U1 Power Supply Not Turning On

I think I can close this now. I bought a replacement main board fairly cheap but the seller wasn't sure if it was working or not. The set was still inop after installation but I noticed the board was getting very hot. Narrowed it to the Silicon Image HDMI controller ic and after removal the set booted and worked as normal, albeit without any hdmi ports.

Since I had the old board with the main uP failure I lifted the hdmi controller off of it and placed it on the new board. Took a little mucking but all four hdmi ports are functional and this one has a happy ending.