Re: Insignia ns-42pdp (lg pdp42x30000)
I think I should go ahead and strangle my kid...
I think I should go ahead and strangle my kid...
-
-
Re: Insignia ns-42pdp (lg pdp42x30000)
The C2 Panny is a nice basic TV. I'll have a look at the post later.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
-
Hello, I'm new to the group and to trying to repair a LCD TV. During the past few years, I've been collecting/repairing/restoring vintage personal computers (Commodore, Apple II, Atari, TRS-80, Texas Instruments, and Timex Sinclair). This has been my retirement hobby. Now I've gotten interested in trying to repair a LCD TV that I have and used regularly when working on vintage computers.
The LCD I'm working on is a Insignia NS-LCD019. I've downloaded the service manual that I could find, but it must be a different revision since not too many items in the service manual match the TV... -
I Am Looking For Some Direction, Or Suggestions On Where I Should Focus My Attention. I Have A 59 Inch Samsung Plazma Tv. The Tv Was Working Decently, Maybe Once In A Blue Moon, I Had To Unplug And Plug It Back In, As The Tv Would Just Shut Down And The Standby LED Light Would Come On And Stay On. If You Tried To Turn The Set Back On, The LED Standby Light Would Blink Rapidly Until You Released The Remote Button. Too Fast For Flash Codes. Once Plugged Back In, The Set Would Work Fine, Sometimes For Months. I Took The Back Off Of It, As The Was Some Distorted Pixels On The Right Side About 1/2... -
Having a new problem with the 19" Insignia that I modified with one of my automatic turn on circuits. That is now completely disconnected so that is not the issue. I was doing some modifications on that circuitry and managed to short something out on the underside of the power board.
Actually found and bought the service manual (who knew it was even available?!) which brought me to the High Voltage Startup Circuit controller chip.
Looking up that chip number- LD7575APS brought me to the attached datasheet. I have marked my voltage readings on the schematic sheet (open in new... -
There is voltage on the bridge rectifier and main caps (163V). Fuses all check good. One of the smaller electrolytic caps (C9112 which is 50V, 100uF) looked bloated, it measured 60uF with one tester, and defective with another. I replaced it temporarily with same uF rating, higher voltage since I don't have the exact one. I also found that one of the switching mosfets (for lower voltage DC supply I think) was shorted. It is a 50R800CE which I didn't have, but had something with the same voltage and current rating and a similar Rds. None of these fixes helped. I'm out of ideas. Any suggestions... -
Eventually discovered a burn mark near lower corner of LCD. Here is a summary- Backlight on, no image
- Disconnect right buffer board (view from front), left side display comes on
- Masked off pin 7+8 (both ~12,5v on both left and right buffer board) from t-con to right buffer board (view from front) display works but have some lines
- Buffer board is pretty simple
07-11-2025, 04:04 PM
Comment