Re: Problems with Insignia 42" Plasma
Hi Guys
Spent a few more hours read postings for a 42' LG Plasma and came across a post by grbgemen (screen slowly fills up).
In that posting RayRod81 talked about the caps around the UP/DWN setup pots causing this problem on the Ysus board, not the Zsus board.
Because he was talking about a 52" model, the cap# numbers didn't match my board.
I looked at the baord and I had approx 6 caps at the 10uf 350v size in the area of these pots.
I replaced them all with 10uf 450v caps and the tv comes...
MacCormac
Member
Last Activity: 06-28-2020, 03:36 PM
Joined: 09-21-2013
Location: Brampton Ontario
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Re: Problems with Insignia 42" Plasma
Hi Guy's
I finally replaced the small 330pf cap on the supply board to no effect.
I've also tried swapping out the Zsus board, also to no improvement.
If I play with the up/dwn pots on the Ysus board during startup of the TV,
I can speed up the clearing of the screen, but I have't to readjust again for
sparkles and rainbow effects alittle while later as the TV comes up to normal running temperature
Still original problem but watchable after about ten minutes
still...Leave a comment:
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Re: Problems with Insignia 42" Plasma
Hi Tom66
Yes you were right
I searched around on the net and found a pdf service manual for NS-42PDP
it had a schematic of my power board and I found the cap to be a 330pf 1Kv
I,ve yet to get one and replace it.
ThanksLeave a comment:
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Re: Problems with Insignia 42" Plasma
Hi Again
I finally had time to look at the TV again.
This time I removed the PowerSuppy Board to try resoldering.
I found that a small (titanium cap ?) capacitor C529 had burnt up on the board.
I cannot identify its type and or size/value.
Im posting some pictures to see if anyone can give advice.
Note Diodes D511,D514 & D515 are all OK....Leave a comment:
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Re: Problems with Insignia 42" Plasma
Thank you Tom66
I downloded the file and I'll read through it and test the voltages.
It'll take me another day or so
Thanks againLeave a comment:
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Re: Problems with Insignia 42" Plasma
only pot on Zsus board i believe should be 165volts by sticker
I have to make it 173.2 to get rid of sparkles in the top left side of screen
once screen has cleared up.Leave a comment:
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Re: Problems with Insignia 42" Plasma
Also note the volume control OSD is also smeared in the last pictureLeave a comment:
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Re: Problems with Insignia 42" Plasma
Hi
Ive gotten the plasma working again, after resoldering the Zsus and Ysus boards
and tweaking voltages slightly.
Now I'm back to the original problem of having the black spray painted look at power up ,which will disapear after approx. 4-5minutes of being on.
any Idea's?
See pictures below...Leave a comment:
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Re: Problems with Insignia 42" Plasma
All Pictures...Leave a comment:
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Re: Problems with Insignia 42" Plasma
Sorry
Impatient I guess...Leave a comment:
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Re: Problems with Insignia 42" Plasma
I've attached chasiss and board pictures
hope this helpsLeave a comment:
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Re: Problems with Insignia 42" Plasma
Hi
I removed Zsus board and resoldered the pins on the electrolitic's and on the main IC as well
When I reinstalled the board the TV's up and running again, needing some adjustments for sparkels
I am going to resolder the Ysus board soon and then I would like to tweek the volatages to remove any sparkels
Do you know how this model can be put in test modeLeave a comment:
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Re: Problems with Insignia 42" Plasma
Thanks for the help
I'll see about getting kit for the Zsus board
i let you know how it works out.Leave a comment:
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Re: Problems with Insignia 42" Plasma
Now if I unplug P1 on the ZSUS board and power up with the input signal on HDMI, the TV stays on with a very dim picture and good sound.
I can't keep TV on long with no picture signal, TV auto shuts off.Leave a comment:
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Re: Problems with Insignia 42" Plasma
Sorry
I checked all the voltages and they were OK as labelled
Va=65v
Vs=187v
I am not sure where to find what you call vscan or what its value is?
Internal sticker as follows:
Va=65v Vs=187v 5v=5.2v
187/-80/12o/N.A./165
I assume -Vy= -80v, VSC=120v, and ZSUS=165v
I don't know proper name for ZSUS voltage.
All these voltages measure correct.Leave a comment:
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Re: Problems with Insignia 42" Plasma
I see on Ebay repair kits for my ZSUS board
6871QZH049B but no replacement board with the same ver#.
Is this chip a surface mount and hard to solder/replace?Leave a comment:
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Problems with Insignia 42" Plasma
Hi
I'm a retired Electronics Tech.
Used to repair Crt TV's
First time posting
I Have a 2006 Insignia 42" plasma NS-42EPTV internally an LG PDP42V7xxxx
My first symtoms were like the slow startup thread on your site.
When powered on screen was (black spray painted) over about 3/4 to 6/8 of the surface. picture was/is good where ever the pixels weren't black.
Over approx. 2-5 minutes the black pixels would slowly turn to a good picture.
TV ok after this until turned off.
Checked voltages via internal... -
Re: New Members - please post your introductions here
Hi Guys
Found this site in hopes to repair my Insignia 42 Plasma
Used to repair tube type TVs and old VCRs few years back as well as PCs & Monitors.
Havent kept up to speed on these Flat PanelsLeave a comment:
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