Samsung Plasma PN58B860Y2F low vscan

[xrey]

We all of the sudden started getting a washed out picture and rainbow colored static/snow.

When we tested vscan, etc., everything measured properly but not the vscan.

Supposed to be -193 got -93 (tested it w the TV on)

Researched it and decided to replace the y board and y buffers.

Now I get no picture or sound - TV turns on but nothing else.

When I run the same tests I am still getting -93 on the vscan test and this is now a different Y board, buffers, etc.

So I am thinking either I did something wrong originally in how I did or interpreted the -93 reading - or this y board is having the exact same issue.

Multimeter was set to 200 on the left hand side (there is a V with a - and ... underneath).

May or may not be relevant: in 2013 I had to replace the main board << may not be exact correct term - the one the HDMI is on. At that time I think the symptom was constant clicking from the TV. Has been working perfectly until this now happened.

What do you think I should try next or do?

Thanks very much.

[dick_barton]

Re: Samsung Plasma PN58B860Y2F low vscan

Do you have any high resolution photo's of your boards which could help people to work out where you should measure Vscan?

[xrey]

Re: Samsung Plasma PN58B860Y2F low vscan

Do you have any high resolution photo's of your boards which could help people to work out where you should measure Vscan?

Thanks dick_barton

I'm willing to post a picture if that would help, for sure, the thing is, I'm pretty certain I am measuring at the right spot because Vs, Va, Vscan, etc., are clearly labeled on the board.

I'm wondering if a better question or better way to ask would have been just that I replaced the Y boards and Y Buffers and now not getting picture and sound.

I'll post it though if you think that would help.

[Hamie]

Re: Samsung Plasma PN58B860Y2F low vscan

What's the vscan with the buffers disconnected?

[xrey]

Re: Samsung Plasma PN58B860Y2F low vscan

What's the vscan with the buffers disconnected?

Saw this real late - will try tonight tonight or tomorrow.

What could I expect to find or figure out if it's different?

Also - I remember reading that for some measurements you need to have the TV on for at least 15 minutes to get a true reading. Does that apply to the vscan reading?

Thanks @Hamie