Samsung s42ax-xb01

[martyparish]

Re: Samsung s42ax-xb01

DMM = Digital Multimeter

[Mako]

Re: Samsung s42ax-xb01

ok. im gonna walk to my neighbors and see if i cant get one.

[Mako]

Re: Samsung s42ax-xb01

my friend is letting me borrow one, im picking it up and will be back on here in about an hour.

[tom66]

Re: Samsung s42ax-xb01

OK, I am here... Sorry, was busy.

[Mako]

Re: Samsung s42ax-xb01

no problem, it seems it might be a little later getting it than i originally thought. im heading over thee now, hopefully be back in 30 minutes to one hour. if you think you wont be on by then, can you list what i should test please? maybe even do so anyway so i can start right away when i return home.

[Mako]

Re: Samsung s42ax-xb01

ok im back, with the multi meter. what now?

[tom66]

Re: Samsung s42ax-xb01

OK, I need you to check the Vs voltage on the Y-Main connector.

[Mako]

Re: Samsung s42ax-xb01

can you give me a quick way to know how to do this? i dont just wanna start sticking probes wherever.

[Mako]

Re: Samsung s42ax-xb01

tso far what i can find is saying to put the black probe into a mounting hole, and the red probe onto one of those little nodes. is this correct? or do i need to use the empty slots in one of the plugs going from the psu to the y board?

[Mako]

Re: Samsung s42ax-xb01

if i did it correctly, which was by putting black into a screw hole, and red onto a node, i got 1.4 v's for the couple seconds it was on.

[Mako]

Re: Samsung s42ax-xb01

after researching more, that didnt seem right, and on the board written was 1 2 vs 1 2, and that made me think the top 2 plugs in the connector were for vs, and since one of the cords was black i put the black one in there, and the red one in the slot beneath it, then plugged it in, getting very small reading for the second or 2 its on, of .1-.2 volts.

[tom66]

Re: Samsung s42ax-xb01

Sorry I'm super busy at the moment, but I think you did it right. Vs is definitely dead. You should measure close to 170V on this older Samsung design (newer Samsung use 200V or so.) Now try without both Y-Main and X-Main connected.

[Mako]

Re: Samsung s42ax-xb01

what do you mean, put the probes into dangling cords?

[Mako]

Re: Samsung s42ax-xb01

also, strangely, i randomly pressed a few butons on the front while only X was connected, and it beeped when i pressed them, which had neve happened before.

[tom66]

Re: Samsung s42ax-xb01

Is there a free-standing post marked "Vs" on the power supply?

[Mako]

Re: Samsung s42ax-xb01

you mean on the board? and the psu board is the one right in the middle right? and what do you mean by post?

[Mako]

Re: Samsung s42ax-xb01

Vscan node, and Vs-adj square with an x with it is all i can find like that, beside little Vs' written next to cords

[tom66]

Re: Samsung s42ax-xb01

PSU board is middle, yes. It connects to main power input.

OK, you will have to be careful, probe it directly on the power supply pin, do not short it out to anything.

[Mako]

Re: Samsung s42ax-xb01

ok i found a little node labeled Vs, sticking like a mm or less out of the board, is that what you meant?

[tom66]

Re: Samsung s42ax-xb01

Can I have a picture?