Samsung un32f5000 no video

[redtux777]

Hi, I have bought a Samsung un32f5000
It turns on but no video. You can here the Samsung jingle when it turns on.
I see nothing at all on the screen.

Here is some pics.

Where should i start?

Main board?
Power board?
T-con?

Fix or replace?
Thanks everyone

[CapLeaker]

Re: Samsung un32f5000 no video

does the LED backlight turn on, blink for a sec or nuttn at all? does it have sound? need a bit better description on what the tv is doing or not.
Shine a flashlight into the screen and look if you see a pic.

[redtux777]

Re: Samsung un32f5000 no video

Plug the tv it makes the Samsung jingle like its turning on but no back-light flash at all.
cant see a picture with a flashlight.

when I push the power button it flashes red but doesnt seem to turn off or on.

When I plug it is the only time it makes the Samsung jingle and 6 red blinks.

Hope that helps.

THANK you for your help

[CapLeaker]

Re: Samsung un32f5000 no video

I'd like to have another pic of the power board, so we can see the pinout and board number. Do you have a multi meter to troubleshoot?

[nomoresonys]

Re: Samsung un32f5000 no video

maybe try unplug the cable from power supply to mainboard, plug tv back in turn it on, see if backlights come on, as always be careful working with power supply, HIGH VOLTAGE, on primary side can be deadly.

[redtux777]

Re: Samsung un32f5000 no video

Unplugged the main board from power board. Does nothing. Does not turn on.

Yes I have multi meter. -I have a background in Electrical and pc repair.

[CapLeaker]

Re: Samsung un32f5000 no video

wrong board pix. I need the power board. specifically that area that has the connection between it and the main board you just posted. We need to see the pin out there. A higher quality pic would be nice. If you can't see any details, we can't either!

[redtux777]

Re: Samsung un32f5000 no video

I have noticed then touching the plastic bezel around the screen on the power board side I get some static. I also can hear something rolling around between the metal and the screen.

[redtux777]

Re: Samsung un32f5000 no video

oops sorry - here are the right pics

[nomoresonys]

Re: Samsung un32f5000 no video

I have noticed then touching the plastic bezel around the screen on the power board side I get some static. I also can hear something rolling around between the metal and the screen.

that dont sound good.

[nomoresonys]

Re: Samsung un32f5000 no video

did you try reseating the cable from mainboard to tcon? and tcon ribbons?

[redtux777]

Re: Samsung un32f5000 no video

Tried to re-seat cables with no luck

[nomoresonys]

Re: Samsung un32f5000 no video

try testing the connectors on the power supply, should be a label by each connector with expected voltages, meter in dc mode, black probe to chassis or ground screw red to top of connector where you can contact a little metal, I test m with power on.

[nomoresonys]

Re: Samsung un32f5000 no video

ok, I couldnt see your whole back of tv, this one may have power supply and inverter on same board.

[CapLeaker]

Re: Samsung un32f5000 no video

unhook the main board from the power supply. Take a 500 Ohm to 1k resistor and jumper PSon and BLUon to 5v Stby. The power supply should be all on and the backlight should be on. If that doesn't go, unplug the backlight on the power supply and measure all outputs with you DMM on DC, use chassis GND or the GND pin on the connector for the negative lead.

[redtux777]

Re: Samsung un32f5000 no video

No luck with the resistor jumper test. Used a 1k ohm 1/2 wat resistor.
I did the volt test on the power board. I have these results at home. (couldn't put results on yesterday because site was down.) will get them on in a bit. ... From memory they seemed fine.


I see a $33 powerboard pulled from a broken screen online...

[tom66]

Re: Samsung un32f5000 no video

I'm betting open circuit LED inside the screen, have you tried checking the voltages on the connector the the LED array?

[budm]

Re: Samsung un32f5000 no video

Check the DC voltage right at the two legs of the cap CM874.

[redtux777]

Re: Samsung un32f5000 no video

I'm betting open circuit LED inside the screen, have you tried checking the voltages on the connector the the LED array?

Is this the led array?(see pic)

I get 0 from all the voltages except 200~ at #12 (+1)

[redtux777]

Re: Samsung un32f5000 no video

Check the DC voltage right at the two legs of the cap CM874.

getting 120v dc at cm847