D9200 ticking and bounce

NCCML

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Hello all.

Hoping some of you D9200 guys can give me some advice on this monitor. There is a slight bounce to the image in the screen... it's kinda hard to see in the video but quite noticeable in person. 33" in a showcase.

I noticed that there is a ticking sound on the chassis that coincides with the bounce. Each time you hear the tick the screen bounces. I have Star Trek Voyager hooked up as well and this doesn't happen with that game, just Target Terror.

You can hear the tick when I bring the phone in closer to the board. I also got some shots of the dag under the yoke. Looks really chipped and flaky. Is that a problem?

Video here:

https://www.youtube.com/watch?v=whK-zwb0ce8&feature=youtu.be

Any ideas? I know a couple of you guys are really good with the 9200's.
 
Hoping somebody can give me some insight. I know Ohmerone and ChrisCooper are both pretty well versed in the 9200.

I am curious whether or not that decayed dag is something to worry about.

Also, does it give any clues where to start looking that one game produces this effect but the other doesn't?

Could a section of the chassis that receives the signal somehow have a part that would only react to certain game signals? Sync frequencies that are different? Sorry if these are really obvious questions, I am certainly not a pro on monitors, especially something complicated like this 9200. I changed all the caps last year..... it was like 78 or something. Used all good nichicon, ordered from Mouser. Changed filter caps and the low z cap on the sync board too.

If it helps you guys to know that there was some kind of repair to the sync board I'll mention that too. Looks like a component burned up towards the bottom and some resistors and a diode or two were replaced. The traces were real bad and I put some trace repair on that myself to strengthen it.

Thanks guys, I really appreciate any help you can give me.
 
Hello all.

Hoping some of you D9200 guys can give me some advice on this monitor. There is a slight bounce to the image in the screen... it's kinda hard to see in the video but quite noticeable in person. 33" in a showcase.

I noticed that there is a ticking sound on the chassis that coincides with the bounce. Each time you hear the tick the screen bounces. I have Star Trek Voyager hooked up as well and this doesn't happen with that game, just Target Terror.

You can hear the tick when I bring the phone in closer to the board. I also got some shots of the dag under the yoke. Looks really chipped and flaky. Is that a problem?

Video here:

https://www.youtube.com/watch?v=whK-zwb0ce8&feature=youtu.be

Any ideas? I know a couple of you guys are really good with the 9200's.

got a jumper wire?

complete another ground.

any grounds hooked up to the chassis?

should be to neck board and reflow ground pin on neck board.

keep ribbons wires away from fly if possible.

reseat all your plugs.
 
Well I was able to find some poor solder joints on the 2 pin connector that goes to the bare wire wrapped around the tube. Looks like it is connected to the corners of the monitor frame too. It was a 2 pin connector that looks like the yoke connectors, attached 2 black wires to the neck board.

Are there any other grounds that are supposed to be on a D9200 neck board? I just have that one plug.
 
As ohmerone mentioned. Move all of your ribbon cables away from your high frequency smps. Keep them all to the right side of the board.

Jumper that dag wire with an alligator clip to ground and see if that stops.

Has any work been done to this chassis? Ohmerone has some threads were he talks about certain caps that are likely to go bad. Or you can just change all 80 plus caps. Lol

If you want to bullet proof that thing, socket IC103 and put a new one in. They always give major trouble down the road.

You could also have a more complex issue where a trace on your ground side of the smps is slightly cold jointed somewhere and it's causing that click and spike . You may need to send it out for service or if you want to take yourself, isolate your powersupply from deflection side and load it to see which side the issue is on.



Electronic repair services
Servicing most monitor chassis
Sanwa, Wells, Sanyo, Sharp
[email protected]
for more info!
 
Well I was able to find some poor solder joints on the 2 pin connector that goes to the bare wire wrapped around the tube. Looks like it is connected to the corners of the monitor frame too. It was a 2 pin connector that looks like the yoke connectors, attached 2 black wires to the neck board.

Are there any other grounds that are supposed to be on a D9200 neck board? I just have that one plug.


Let us see what your setup is?

it tells more then just text

Put the image on a test pattern so we can see every little detail about the image

when its in game mode things are flashing all over and we trying to be precision

about our next tip and if to many variable at the same time, just makes it

more difficult to analyze, from a glance.

Once the cross hatch or color pattern is perfect then you test it on game mode.

You need a ground to the chassis and the neck board

confirm your high voltage cup is locked in good.

and the clips are in the hole good.
 
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