Hisense F46V89C DEAD ONLY 5V WHEN MAIN BOARD DISCONNECTED

[jgrice53]

Here is another one that I am having problems with. Hisense F46V89C I think it is the same as the Dynex DX-L40-10A. Customer claims was struck by lightning, but the ac fuse was still intact. when I plug it in there is no indicator on the front, no l.e.d. or any click sound. I replaced the PS and main board from shopjimmy and still have the same condition. with ac plugged in and with everything disconnected from the PS, I get 4.8v on the 5v pin on the xp805 connector. but the 5vstb is not there? anyone have any suggestions?

[jgrice53]

Re: Hisense F46V89C DEAD ONLY 5V WHEN MAIN BOARD DISCONNECTED

can someone take a look and give me an idea of how to jumper this to turn on the power supply? I do not see a p-son pin.

[jgrice53]

Re: Hisense F46V89C DEAD ONLY 5V WHEN MAIN BOARD DISCONNECTED

hope you can see these pics clear enough

[tw2005]

Re: Hisense F46V89C DEAD ONLY 5V WHEN MAIN BOARD DISCONNECTED

For what it's worth , I found this.

[budm]

Re: Hisense F46V89C DEAD ONLY 5V WHEN MAIN BOARD DISCONNECTED

"STB" pin is the PS_ON pin. Check the DC Voltage when TV is OFF and when TV is ON.
<1V = OFF, >2.5V = ON

[iranem]

Re: Hisense F46V89C DEAD ONLY 5V WHEN MAIN BOARD DISCONNECTED

i guess "SW" pin is the PS_ON pin

[budm]

Re: Hisense F46V89C DEAD ONLY 5V WHEN MAIN BOARD DISCONNECTED

'SW' is the BL_ON (INVERTER ON)
'BRI' is the Backlight Dimming control.

[iranem]

Re: Hisense F46V89C DEAD ONLY 5V WHEN MAIN BOARD DISCONNECTED

thanks, Budm, i forget Dimming control

[iranem]

Re: Hisense F46V89C DEAD ONLY 5V WHEN MAIN BOARD DISCONNECTED

in algeria, there are the CONDOR model is the same as Hisense

[jgrice53]

Re: Hisense F46V89C DEAD ONLY 5V WHEN MAIN BOARD DISCONNECTED

Okay, I put a 100ohm resister between stb and 5v and all the voltages on the connector were there, i also had 16v on xp803, so i guess i got a bad main board from shopjimmy?