screen turns red

dave24

New member
Joined
Dec 7, 2011
Messages
30
Reaction score
0
Location
Missouri
I have a wells gardner monitor that will go all red after it has be on for little bit. The game is cali speed. Any idea on what is wrong.
 
It all depends.

we will need to know:

-game(ok cali speed)

-monitor model. We know wells gardner but they made about a bizillion different models.

If you cant find any other info of the monitor post some pics of the chassis(circuit board) of the monitor and we will do out best to help you id.

You could have several main issues:
-bad tube. intermittent short in the red gun

- bad neckboard or solder issues. Prevalent in SOME wells monitors, the solder joints get krappy or sometimes the traces themselves also lift off.

- other chassis issue

-gameboard issue


When you go to look for the monitors model number, IT WILL NOT be on the tube. That is just the tube info.
 
wells gardner 7500 series. There are some traces on the neck board lifed but are still making contact with traces.
 
You sure about that? Might want to really give them the old wiggle test because thats a pretty common problem on those 7500s and u5000s.
 
I have this U5000 that I use with my supergun (JAMMA tester) that I had rejuvenated for a weak red. now I saw it with my own two eyes that the red gun was weak, but after the rejuve when I powered it up, the red was still weak. upon extremely close inspection of the traces on the red transistor, it didn't look it at all, but I checked all the points for continuity and one of the legs didn't check. I don't know how I could still have faint red despite one of those legs showing dead, but nonetheless, I got out some wire and cut the old traces and redid them all.

after a healthy dose of white balance, I got a pretty decent working monitor out of the deal. my only regret is using 22 gauge wire to do the patchwork, 30 gauge would've looked way nicer.
 
Back
Top Bottom