DIYbanter - View Single Post - 22" monitor GNR TS2200WA

Mike Coon[_2_]

In article ,
says...

I have a 22" monitor GNR TS2200WA on a repair or discard basis. It
consumes 2W when powered; presumably on standby. But does not move off
standby to full operation. I can also not get the back fully off, just
some daylight along the bottom edge. Has anyone any guidance on either
mechanical or electronic aspects? Please?

Mike.

I've prized the case off and got sight of the two boards; one power and
one logic. Both well provided with component annotations, even for the
jumpers, but of course I don't have a schematic. Boards are connected by
a cable that, it says, supplies +5V and has one sense "ADJ" line and one
"On/Off" line. Quite like a PC or no doubt lots of other appliances
which have a low-power standby state. The power supply is marked that it
supplies +5V, and "optionally" +24V, +12V and -8V.
Measuring, the +5V started at ~3V and worked up to a rather wobbly 5V.
Must stick a 'scope on the wobbles to see if I can spot a pattern. The
"ADJ" line also varied ~2V / ~3V. But clicking the power switch made no
difference to the +0.1V on the "On/Off" line.

Mike.