WG 6100 "Deflection" Issue?

FrizzleFried

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Take a look at this video...

Notice what's going on to the left of the screen? What is causing that? Any suggestions?

I re-capped the 6100 last night. I dropped a LV6100 kit in to the low voltage section... which DID rectify some small issues but didn't rectify the major issue I am having... the left 2 to 2.5" of screen not showing anything.

It appears that when the vectors hit a certain spot to the left... they simply bunch up. When getting hit by a missile, for example, the screen lights up, but a "line" right at the location where the screen stops pops up super bright as if all the vectors that were supposed to cover the left 2"-2.5" all lit up in that one 1/16" to 1/8" vertical line. Another thing you can notice is when the stars are "coming at you"... they hit that spot in the screen then simply drop DOWN as if they can't go horizontal but still can go down).

Some have suggested it's a SW PCB issue... I can test that by pulling out the monitor from the Tempest, but getting to it is a bitch and I was hoping to not have to do that... but if I do... I do.

EDIT: BTW - I am about 50/50 sure that black area on the left "grew" from about 1.5"-2" to 2"-2.5" or so after the cap kit. I am not 100% sure... but I want to say it did. Unfortunately I'd not actually removed the monitor prior to re-capping (it as behind the black glass)... so I could be wrong here.

Any suggestions?

Youtube video:

 
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This really looks like a pcb board issue where the DAC is messed up...just a guess. If I'm right it will not allow the voltage to swing properly above a certain point on the Y axis.
The best way to confirm this is to run it with your tempest.
I hope you get it figured out.
 
Monitor

You need to make an extension harness so you dont have to pull the monitor.

Looks like a PCB issue.


Some have suggested it's a SW PCB issue... I can test that by pulling out the monitor from the Tempest, but getting to it is a bitch and I was hoping to not have to do that... but if I do... I do.


 
You need to make an extension harness so you dont have to pull the monitor.

Looks like a PCB issue.


Some have suggested it's a SW PCB issue... I can test that by pulling out the monitor from the Tempest, but getting to it is a bitch and I was hoping to not have to do that... but if I do... I do.


Wouldn't help (the extension)... the Tempest is in the other room in the corner... I'm gunna have to move at least 1... likely 2 other cabs to maneuver the Tempest to where I can work on it.

Remind me... does a Tempest monitor come out the front or out the back?

If the front...maybe I can get my arm in the coin door enough to unplug the monitor...
 
Why pull the entire monitor. Just pull the deflection board (if they use the same monitor) from one and try it in the other. I doubt the HV section causes this, and also doubt it's one of the frame-mount transistors...
 
Why pull the entire monitor. Just pull the deflection board (if they use the same monitor) from one and try it in the other. I doubt the HV section causes this, and also doubt it's one of the frame-mount transistors...

If I could easily get to the back of the Tempest, I'd simply bring the SW monitor over and try it on the Tempest without having to pull anything out of the Tempest...

...alas...it's going to take 20 minutes of heavy lifting to get to Tempest... and 20 minutes to put everything back.

Yeah... I know... it has to be done.
 
Well, unfortunately you can't just pull the Tempest monitor from the front without getting to the back first and unhooking everything connected to it. So you might as well just do it the way you said...
 
The funny thing is that eventually SW and Tempest will be neighbors. Hell, I should just pull the Tempest, bring it out to the work area and set it next to SW for now... I could put Star Castle in it's place so as to not disrupt the delicate VECTOR balance of the room.

:)
 
I can now confirm 100% that this IS in fact a MONITOR issue... not a PCB issue...

Here is my Tempest monitor in the Star Wars:

SWUR_MONITOR.jpg


Any ideas?

For now, I've moved the bad monitor over to the Tempest where the issue is only noticeable between levels as during gameplay only about 2/3 of the screen is used...

TEMPEST_SWMONITOR.jpg


But I'd sure like to fix the problem.
 
Did you swap boards between the two monitors to narrow down the problem - like I said earlier?
 
Unless one of the voltages for the deflection circuit is bad.

Still, try the deflection board first - like I said way back in post #5...
 
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