RCA led46C45RQ Still no fix

[tennno`]

RCA led46C45RQ sound no pic, no power going to back lights.
changed power board 3 times,main board 1,tested leds with led tester
all voltage correct 5v standby from power board.mains send to power
board all voltages com 4 shows 5v 5v grd ,leds flash 2 times then go out.
pins at led plug Spike to 150v then drops off(leds pluged in or not)

[nomoresonys]

Re: Still no fix

did you do the flashlight test? shine it on the screen and hit menu look closely see if you see any text or anything.

[tennno`]

Re: Still no fix

Got the set apart putting in new back lights

[dskall]

Re: Still no fix

I would say you are in the right place.

[tennno`]

Re: Still no fix

Not seeing any pic with flashlight

[nomoresonys]

Re: Still no fix

may be a backlight issue, check the fuse on the tcon board, see if you have about 12 volts on each side, neg meter probe to chassis ground pos to each side.

[dskall]

Re: Still no fix

If led voltage goes to 150v with or without connector plugged in you have a backlight problem. How many led's does it have? Need some board pictures and connector pictures.

[nomoresonys]

Re: Still no fix

Got the set apart putting in new back lights

so what was the results? always test new backlights before and after installation.

[tennno`]

Re: RCA led46C45RQ Still no fix

Rechecked new led lights found 1 bad one , replaced it all works fine.
Thanks guys.

[nomoresonys]

Re: RCA led46C45RQ Still no fix

glad to hear it.