CurtPalme.com Home Theater Forum

Zantry · Joined: 18 Oct 2010 Posts: 2 Location: Scotland

Hello everyone,

I have a vph-1270qm that has been working perfectly for many years but now there is a problem.

The projector has been unplugged for about 7 months and when I started it there was no picture from the green tube on the screen when connected to my computer with RGB input so I looked in the tube and there was still an image but very dim. The red and blue tubes are perfect. when I use service man bam the green is fully back on but when back to pc desktop only red and blue. Also if I plug a dvd on the s-video connector the green is back on.

I have tried different cables and pc but still the same issue.

Can someone help me with this problem?

**AnalogRocks** · Posted: Mon Oct 18, 2010 3:40 am Post subject:

Unplug the RGBHV input board and plug it back in again. It may have shifted.

**Curt Palme** · Posted: Mon Oct 18, 2010 5:18 am Post subject:

I just repaired a 1252 for a similar problem- it was a bad CA(G) board. I've got spares if you need one,but am out of town for a week. CA(G) board:

http://www.curtpalme.com/Sony125x_Layout7.shtm

Zantry · Joined: 18 Oct 2010 Posts: 2 Location: Scotland

Thanks for the quick reply. I am currently away from home but I will check the RGBHV input board.
If the problem is on the CA(RG) could it be repaired instead of replacing it? The projector is in Belgium where spare parts a rare.
Could you tell me what was the exact problem on the 1252 because it could help me finding the precise fault in the circuit?