Toshiba 32av502rz

[Vizor]

Re: Toshiba 32av502rz

Anyone think they can help figure out what value those caps are.

[budm]

Re: Toshiba 32av502rz

We need to concentrate on the 5VSTBY first.
You need to lift one leg of the that snubber Diode TVS801 (p/n) and check for resistance leakage of that TVS on high Ohm scale.
Remove all the connectors to the main board and the inveter board and power up, may be use a small 6V lamp 1/2A (about 3Watts) and connect it to the 5VSTBY output and the Secondary Ground, that way you can see the lamp flicker if the voltage is not stable. Do not power up the board without the snubber diode in place.
What is the P/N of that SMPS IC for the 5vstby?

[budm]

Re: Toshiba 32av502rz

Two caps I can read the Values but not the voltage, I will need good pictures of top/bottom to find out which caps are used for 5v, 12, and 24v.

[Vizor]

Re: Toshiba 32av502rz

So, i finally bought a new power supply for this and does the same thing. Voltage spikes on the inventer board. and hear a popping sound out of the speakers every so often.. the main board lights up red etc and shuts off.

[fierce]

Re: Toshiba 32av502rz

Budm,in one of your posts you say to lift the led of the snubber diode,but then you say not to power on the set without the snubber diode in place,how is that done? I'm having the same problem with the same tv,except mine will stay on if I don't plug in the HDMI or the A-video. Any help on a fix would be appreciated

[DavidOH]

Re: Toshiba 32av502rz

Did you check for bad solder? Just a thought.

[budm]

Re: Toshiba 32av502rz

Budm,in one of your posts you say to lift the led of the snubber diode,but then you say not to power on the set without the snubber diode in place,how is that done? I'm having the same problem with the same tv,except mine will stay on if I don't plug in the HDMI or the A-video. Any help on a fix would be appreciated

You lift one leg off the board then check the resistance reading of the Diode, we are trying to find out if the Diode is good or bad. Do not power it up.

[fierce]

Re: Toshiba 32av502rz

No bad solder,replaced startup cap and the few other caps that were on board,replaced another small diode,No change. Now the tv has started to shut off and turn itself back on. By the way what setting do I need my multimeter on? And is there another diode I can stick in there that would work? I've got all kinds of tvs and parts but I can't find anything that looks the same,

[budm]

Re: Toshiba 32av502rz

The snubber diode, when it failed, it will show resistance reading less than 200 Ohms using the probe in both directions.