Monitor Issue

[pegasus]

I hope this is the right forum to post. 

I'm having an issue with my Nintendo red tent as seen in this video: https://www.youtube.com/watch?v=5EIlF-rIVq8

The colors seem to be flipped and the picture shifts down. The shifting picture was there previously and I was hoping a shotgun approach would fix this issue.  Do I have something hooked up wrong with the colors?  I've been playing around with the adjustment pots, but can't get anywhere.

I just finished recap'ing the monitor, installing a new HOT and flyback. I went as far as replacing the filter caps too.

Any advice?

[lordkahless214]

For the wiggling picture you should try reflowing solder on the big white resistors.
I had the shifting issue on my donkey kong until I reflowed.

[pegasus]

Thanks!

I managed to figure out the inverted colors.  I remembered that Nintendo has a switch on the PCB. Flipped it and all was good, but I went to adjust the horizontal and the screen went black. The game is now playing blind, but with horrible sound    I'm guessing the next step is to check B+ and go through the test points.

No glow in the neck.  I checked the fuses and they're good.  At a loss now.

In frustration, I rebuilt the other monitor (caps, flyback) and it is working well, but I would love to get the blind monitor working now.

Any ideas?

[lordkahless214]

Sounds like HV shutdown. Try flipping the switch back, and resetting the controls to where they were and see if it comes up.

I wonder if this monitor is fitted with some kind of inverter PCB

[pegasus]

Switched the switch back and turned the pots back.  Nothing.  Same issue - playing blind.

Guess it is time to go through the flow charts in the manuals and probe the test ports on the boards.

[iankellogg]

if the sound is all messed up too maybe the b+ is way low. Which would mean something broke and its dragging the b+ down.