Mulja tv repair portal

Equipment Repairs => PLASMA TV forum => Topic started by: Turnip on April 14, 2010,07:12:28

Title: Sliding SL-42VK10 (LG PDP42V5)
Post by: Turnip on April 14, 2010,07:12:28

Hi folks,
Have one of these where at switch on front Led is green, green Led on power supply flashes 6 times, otherwise set seems dead with few voltages present.

Any thoughts ? Chris.

Title: Re: Sliding SL-42VK10 (LG PDP42V5)
Post by: daz on April 14, 2010,08:57:56

hi chris
6 flashes on the psu sounds familiar, post a picky of the psu might jog mem
daz

Title: Re: Sliding SL-42VK10 (LG PDP42V5)
Post by: Turnip on April 14, 2010,11:17:05

Thanks Daz,

Couple of pics, the whole 'Sliding' biz and power supply.

Thanks again - Chris

Title: Re: Sliding SL-42VK10 (LG PDP42V5)
Post by: daz on April 15, 2010,05:04:16

Hi Chris
Remembered the 6 flashes fault was on a Philips set, ic8022 causing a missing v-set voltage. On this set only seem to remember was one of the two fets in the top right hand corner going short, but doesn’t sound like the same fault, it’s usually the y sus PCB causing probs, try disconnecting in case dragging psu down.
Not much help I know, good luck
Daz

Title: Re: Sliding SL-42VK10 (LG PDP42V5)
Post by: WILLYAM1 on April 16, 2010,07:16:03

hi turnip.
as i rememeber 1 big blue cap 1u\630 and 4.7ohm-or 6.8ohm\5w near cap in power supply.
good luck.
willyam1

Title: Re: Sliding SL-42VK10 (LG PDP42V5)
Post by: Turnip on April 16, 2010,08:25:52

Hi, and thanks Daz and Willyam1,

Found R96 (6r8 / 5W) O/C, nearby 1mfd 630v checks OK - going for a shematic.

Thanks again - Chris.

Title: Re: Sliding SL-42VK10 (LG PDP42V5)
Post by: WILLYAM1 on April 16, 2010,09:13:20

check and replace the other big blue cap with deformetion
willyam1

Title: Re: Sliding SL-42VK10 (LG PDP42V5)
Post by: Turnip on April 16, 2010,13:19:15

Thanks Willyam1,

Will change cap as suggested. As it wasn't bulgy thought a shematic the biz as I couldn't see any direct connection with that O/C resistor connected to some sort of FET.

Plasma is so complex, hope it soon turns into something more simple.

Some hopes - Chris.

Title: Re: Sliding SL-42VK10 (LG PDP42V5)
Post by: WILLYAM1 on April 21, 2010,15:36:59

what is the model of your p.s.
willyam1

Title: Re: Sliding SL-42VK10 (LG PDP42V5)
Post by: Turnip on April 22, 2010,05:24:56

Hi Willyam1,

PS is Dea Gil Engineering P/N 3501Q00053A Rev A  also DGK-420 Rev A.
Cap in question either C19 or C97 which is next to O/C R97

Many thanks - Chris.

Title: Re: Sliding SL-42VK10 (LG PDP42V5)
Post by: WILLYAM1 on April 23, 2010,15:59:36

hi turnip.
did you try to operat it after you changethe resi 6.8.
is your plasma working know.?
the problem that i hade  green led ok no screen vs is low allmost 30v insted180v repleced resi and cap as above and change 2 elec capi in primery supply tv is ok a few month no complian from costumer.
willyam1.

Title: Re: Sliding SL-42VK10 (LG PDP42V5)
Post by: Turnip on April 24, 2010,11:50:06

Thanks, Willyam1,

Have noted your experience,

Will try replacing that O/C resistor, switch on, and try check where smoke comes from.

Ever the optomist - watch this space for more volcanic dust - Chris.