Author Topic: baird inverter board wanted (Read 5683 times)

chrissie jones · « **on:** February 21, 2014,09:18:38 »

4H+v2988.031....must be cheap..or swop..

Mulja tv repair portal · « **on:** February 21, 2014,09:18:38 »

sparky · « **Reply #1 on:** February 21, 2014,12:51:20 »

Try EMOS

marky mark · « **Reply #2 on:** February 21, 2014,17:49:24 »

Lets go mad....

Lets try repair

Lets face it, you've probably diagnosed wrong. Have you done any checks?

Mulja tv repair portal · « **Reply #2 on:** February 21, 2014,17:49:24 »

chrissie jones · « **Reply #3 on:** February 21, 2014,18:51:02 »

checks on what...marky.

sparky · « **Reply #4 on:** February 22, 2014,05:31:21 »

WHAT'S THE FAULT AND WHAT HAVE YOU CHECKED

chrissie jones · « **Reply #5 on:** February 22, 2014,06:05:31 »

24v present

Mulja tv repair portal · « **Reply #5 on:** February 22, 2014,06:05:31 »

Keith · « **Reply #6 on:** February 22, 2014,06:30:03 »

Hi

Do you have 'back light on ' signal from the processor?
Any oscillations on the transformers?
this type of inverter usually have feedback testpoints from the tubes, check them all you may find one is very different, caused by a faulty tube.
Have you tried 'forcing' the inverter on

Keith

chrissie jones · « **Reply #7 on:** February 22, 2014,06:37:45 »

thanx kieth...ill try that now.

Davy · « **Reply #8 on:** February 23, 2014,14:11:28 »

I do my checking with a 3.7V Li-ion battery from a scrapped cheapie camera, a toy camera would take better shots..... apply +ve to the P on and, the -ve going to the metal work, with the main supply ON the inverter should start up.

Also checked power boards this way by forcing them ON, that little battery saved a lot of work.

Have you tried forcing the inverter ON, could be the backlights as well, is it possible to hook any up?

Dave

Mulja tv repair portal · « **Reply #8 on:** February 23, 2014,14:11:28 »

Mulja tv repair portal

News: