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Equipment Repairs => PLASMA TV forum => Topic started by: Cornboats on May 18, 2012,12:51:37

Title: Hitachi plasma intermittent ghosting
Post by: Cornboats on May 18, 2012,12:51:37

Hitachi plasma 42PD4200

I've got an intermittent picture fault. Full sharp colour picture goes to blur and ghosting for 5 seconds and then back to full colour.

I thought it was LVDS board but swopped and no difference made.

VA & VS voltages spot on.

Any ideas would be welcome.

Title: Re: Hitachi plasma intermittent ghosting
Post by: jordan on May 18, 2012,15:44:04

Check or change SMD electrolit capacitors on Y-SUS board C-18,C-36,C-72 all 33uF/25V

Title: Re: Hitachi plasma intermittent ghosting
Post by: Cornboats on May 19, 2012,03:57:12

Many thanks for replying. I check out over the weekend and let you know.

I've a lot to learn- What made you suspect these?

Title: Re: Hitachi plasma intermittent ghosting
Post by: Cornboats on May 21, 2012,14:01:30

I've checked all 3.

they are 33mf, 28mf, 102mf.

are these electrolytic?

my esr meter doesn'tseem to work on them.

Title: Re: Hitachi plasma intermittent ghosting
Post by: Cornboats on May 22, 2012,12:06:19

I checked the 15V rail and its only 117.-11.9V. I was told it came from the Y-sus board but not sure where to look.

Any ideas anyone?

Title: Re: Hitachi plasma intermittent ghosting
Post by: Cornboats on May 31, 2012,12:17:52

I changed z -sus . Got picture and sound and 15v rail. Thought "jobs a good en."

Turned on to find very dark picture highlighted in red.

I'll close this thread and open a new one with new problem.