Hisense F46V89C/DYNEX LX-L40-10 DEAD

[jgrice53]

can anyone point out which pins on this PS to jump to turn it on?

[selldoor]

Re: Hisense F46V89C/DYNEX LX-L40-10 DEAD

Why would you think double posting helps?

[jgrice53]

Re: Hisense F46V89C/DYNEX LX-L40-10 DEAD

because i thought that if i added the dynex model someone may know something about it

[budm]

Re: Hisense F46V89C/DYNEX LX-L40-10 DEAD

'STB' is the PS_ON pin.

[jgrice53]

Re: Hisense F46V89C/DYNEX LX-L40-10 DEAD

thanks bud, do i jump stb to 5v s ? I have 4.8v on 5v s.

[budm]

Re: Hisense F46V89C/DYNEX LX-L40-10 DEAD

You can use 100~500 resistor between stb and the 5V, but you must have the STB wire that goes back to the main board disconnected otherwise the main board will keep that low and not allow the STB to go HI.
Since this power supply board has PFC Voltage booster, you need to check the DC Voltage RIGHT AT THE TWO LEGS OF THAT BLACK MAIN FILTER CAP (THE 450Vdc RATING), it should have about 170VDC when TV is plugged in but not turned on, then it should jump to about 360~400Vdc when PS_ON is applied, you must have this boosted Voltage before trying to fix anything else.

[jgrice53]

Re: Hisense F46V89C/DYNEX LX-L40-10 DEAD

ok, thanks bud...i will get on it tomorrow

[jgrice53]

Re: Hisense F46V89C/DYNEX LX-L40-10 DEAD

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?

[jgrice53]

Re: Hisense F46V89C/DYNEX LX-L40-10 DEAD

Oh yeah, I also heard the relay click when i applied power to the power supply.