Samsung PS42A456P2D main board fault

[llonen]

I am fairly certain I have a main board fault with this set, relevant voltages appear within spec and the plasma panel is firing, no lines or artefacts. I am however not getting the chime on startup and or any logo or other text, the set starts up and shuts down with the panel buttons. Before ordering a replacement main board I want to run a panel test, see below a pic of the logic board and what I presume are the panel test pins which ones do I need to connect together and do I need to remove the lvds cable from the main board.

Many thanks in advance.

[Hamie]

Re: Samsung PS42A456P2D main board fault

Pins 3 and 4

And yes disconnect cable

[ReeceyBurger123]

Re: Samsung PS42A456P2D main board fault

Them control boards have a flash Ic that drives the information for the panel which has a habit of failing causing panel to prime but no image same as PS42Q96 sets etc. But yes disconnect the Lvds and jumper the pins.

[llonen]

Re: Samsung PS42A456P2D main board fault

I have have a very good test pattern displayed, so where does that leave me, I get no chime from the set itself so, but with the jumper disconnected i get no chime and, while the panel primes and stays primed. Control board or main signal board, I am guessing they are not particularly repairable either.

[ReeceyBurger123]

Re: Samsung PS42A456P2D main board fault

Mainboard failure, replace mainboard or reflow it.

[llonen]

Re: Samsung PS42A456P2D main board fault

I have a board here from a Samsung PS50A456P2DXXU which I recently stripped as the screen had a number of stuck lines, identical physical layout I was wondering if it would be compatible, I have the remote for the board as well.

Model

number 450_normal_idTV
Pcb number BN41 00980A

[llonen]

Re: Samsung PS42A456P2D main board fault

Was lucky to obtain a replacement main board for this set, very nice picture on this one now.

[ReeceyBurger123]

Re: Samsung PS42A456P2D main board fault

Good work thanks for the update