Dead toshiba

[fixerupper75]

I got this 42rv53u set. It doesnt have any standby light on. Ac voltage at the fuse is 9vac. I don't have any dc voltages at any of the connectors.

[sordids999]

Re: Dead toshiba

Posting pictures of the back of your tv showing the boards with clear pictures may help you more with fixing your problem

[fixerupper75]

Re: Dead toshiba

Here some pictures. I have 4vac allthe ways to the big transformer in pic number 3.

[fixerupper75]

Re: Dead toshiba

anyone?

[budm]

Re: Dead toshiba

Please clarify the model number, is it 42rv53u or 42rv530u?
Also please take the pictures that will show the WHOLE board, top side and Bottom side of the boards as well.

They look like 42RV530U boards.
http://www.shopjimmy.com/catalogsear...SHIBA+42rv530u

Nothing comes up using 42RV53U.

[fixerupper75]

Re: Dead toshiba

Hello, Just a update on this set. I found mosfet Q820 had blown.
Thanks for looking.

[Rome]

Re: Dead toshiba

Hello, Just a update on this set. I found mosfet Q820 had blown.
Thanks for looking.

I have a problem also that the resistor 1.8 ohms keeps blowing, do think may be that's the problem also. BTW how do you check this mosfet

[CapLeaker]

Re: Dead toshiba

if it's shorted, it's bad.

[budm]

Re: Dead toshiba

Get the P/N of the MOSFT and then look for the spec sheet to learn about the pinout of the 3 pins. It will usually has shorted out between Source and Drain pin when it is bad.

[Rome]

Re: Dead toshiba

Get the P/N of the MOSFT and then look for the spec sheet to learn about the pinout of the 3 pins. It will usually has shorted out between Source and Drain pin when it is bad.

I removed the Q820 & I check it with chinese made tester & it's ok