Vikerex

I just picked up a Sony Trinitron 20" model d2026t-hs, after hooking it up I found out why they gave it away. There is no green tint. I have adjusted the red and blue to 0, and left the green up to 100, then tried to adjust the green but there was no difference. So, I am asking if this monitor is worth fixing?

Ted

InspectorGadget

FYI, it's not a matter of "tint." Tint is a technical term for fine adjustment of phase-encoded color information in the 3.58MHz subcarrier on composite video. The Sony monitor is an RGB monitor. There is no "tint," per se.

What you were adjusting were the relative strength of the Red, Green, and Blue input video amplifiers.

Your problem is that the Green channel is not functioning. It could be:

1. A broken pin or trace on the VGA input connector.

2. A bad internal connector -- broken wire, broken trace, corrosion, bad seating.

3. A bad capacitor in the video amp circuit or separate power supply line (not likely).

4. A blown semiconductor -- transistor or more likely video-amp IC.

5. A cable -- are you using your own cable or possibly one that came with it? (Just to be sure, you never know.)


Is this new or used? If it's old and used, you probably want to pop it open and look at the input and inter-board connectors. Reseat any connector that has a socket. Push on any IC that has a socket to make sure it's seated well. Look at the video input path and look for cold solder joints, cracked PCB, missing pin, pushed-through pin, broken wire, blackened PCB around a component, a capacitor that's leaked a bunch of gooey stuff on the board, or anything else that looks wrong.

STAY AWAY FROM THE HIGH VOLTAGE SECTION. This will be from the back of the tube where there's a big, thick, single wire coming right out of the glass, usually with a big suction-cup-looking thing over the glass around the wire. Trace this wire back (by looking, not touching) and stay away from the wire and the PCB area that it leads to. This is packing 30,000 V even with the monitor off and can throw you across the room, even kill you if you have a bad heart. (I've been thrown a couple of times but not killed yet.)

If you're not electronically (or dangerously) inclined, rest assured it could probably be repaired for a reasonable fee at a repair shop. Get an estimate.

- The Inspector

Vikerex

Well, I opened it up, and could not see anything wrong. I tried a new cable, and that did not help. The monitor is 8 years old, so I am not sure if it is worth fixing, I guess it depends on the estimates.

Thanks,
Ted

Volt-Schwibe

unless there is something seriously special about this monitor, it would be a better deal to replace it.

you can find nice 17" monitors for 99$ after rebate.

it's my assumption that your monitor will be in the neighborhood of 80-160$ to repair.

Terrister

And 21" crt monitors average in the $150-200 range.