Repair

WT: schematics for Viewsonic VX910 LCD
Veiwsonic VX910 LCD monitor If anybody has these schematics or nows of them on line I am trying to find the part number for D660 on the power board. I've had a few suggestions and I appreciate it but I'm still stuck. If worse comes to worse I could try a suitable part (believe to be a dual diode) if anybody h... 15 Feb 2007 19:20

Zenith E44W46LCD Polarizers
I have one of these TVs that's starting to show signs of failure of the blue and green polarizers. There is a slight lack of blue from most of the screen and there's a noticeable green cast to what should be black. I took apart the light engine to clean the dust out and I can see a slight burn on the blue polariz... 4 Feb 2007 16:16

27'' Philips shuts off in 10 seconds
Model 27PT543537A made in 2004 silver case . First it had a shrunk in from the sides and squeezed in the middle picture and would shut off after a few seconds . I replaced ( esr bad ) C 2455 next to the H. osc coil and it fixed the shrinking stuff . The set turns on normal and shows a good picture but at the cou... 27 Jan 2007 00:37

GNR F173 TFT Inverter
Anyone got any idea where I might be able to get an inverter for this monitor? Part numbers on the inverter are: 48.V0861.001 /E DARFON its a two outputs, 4 tube twin transformer with a OZ960S controller chip. I'm guessing one of the transformers has burnt out; when started only two of the lights get ... 26 Jan 2007 18:53

Infinity crossover coil value
I had a customer bring in an Infinity KPX00 crossover for a 6.5" car unit. Coil L2 has burnt marks on it, Its a 24db linkquitz riley filter (or so the spec sheet says). Customer claims low tweeter output http://manuals.harman.com/INF/CAR/Owner's%20Manual/KAPPA%20PERFECT%206-1%20om.pdf in: (+) -------| ... 18 Feb 2007 04:55

Panasonic projection parts ID
Hi, I have a Panasonic PT51D30CB Chassis EP816 and I need to know what to use for D552 in the horizontal output circuit. Thanks for any help. Donovan Posted Via Usenet.com Premium Usenet Newsgroup Services ---------------------------------------------------------- ** SPEED ** RETENTION ** COMPLETION ** ANO... 16 Jan 2007 21:15

Sanyo Plasma TV ( Model PDP42XS1)
Hello, I am an electronics techo, dont work on TV`s that often but have had some experience mainly friends family etc... have not worked on plasma screens so im after some help/advice if possible. The above unit has sound but picture died while watching it ( its not mine) Unit is15 months old (warranty 12mths) ,... 17 Jan 2007 19:15

Backlight Inverter help please
The backlight on Polaroid 7" LCD stopped functioning. It appears it is the backlight inverter. There is an obvious burnt spot on the inverter board. The part number on the board is UI8007S-1. Does anyone know where a replacement can be found? Polaroid Corporation is no help and quite useless in every way. I don'... 14 Jan 2007 01:32

Sony amp model:TA-AX285 no power with tuner connected
Sony amp model:TA-AX285,year:1990 (guess),when the external tuner is plugged in (has special shaped plugs) the +12v shorts out of the 7812 three lead regulator I cannot isolate the problem to either tuner or amp I checked many components on both units.Anyone have any common repair tips?.Thanks in advance. Sidney... 11 Jan 2007 13:02

Repairing Switched mode power supply type welder
Hello, I am attempting to repair a Cebora Power Rod 1565 welder. This is a switched mode type device. One of the power MOSFETS is visabely blown. Where could I start looking for a supplier of this device. I only want a one off. Type W20NB50 made by ST. Thanks for any help. The company Cebors has ... 20 Jan 2007 22:29