WG7400 screen white

yukonblaze

Member
Joined
Oct 9, 2007
Messages
252
Reaction score
1
Location
orlando, Florida
Walked out of room 'Game Working' and walk back in 'Game Working but Screen White.' Did a cap kit and replaced flyback without resolve. Have 2 other working WG7400 boardsets that I want to use to troubleshoot, just need to be pointed in correct direction!!

Jason
 
few things:

first, verify your game is working and you have a video signal going to the monitor. if there was no signal though, it would've been a black screen.

second, verify that your brightness, contrast and the Screen adjustments aren't cranked way up.

if you see diagonal retrace lines then your Screen pot on the flyback is probably up too high.

and if you did all of these, I'm not trying to insult your intelligence. beyond that, I don't know what else to look for.
 
Dont think your insulting my intelligence, I am married and she insults it all the time. Was doing 3 cap kits and all the boards work but this one. Just hoping to find the needle in the haystack!!!

Jason
 
:D

yeah, my fiance gives me shit all the time, people ask why we're not married yet, it's probably because we already live like we are.

if you recapped this chassis, pull it back out and make sure you don't have any solder points bridged. I made that mistake on the last job I did on a K7500. check back over your caps and see if any went poof. I did a K7000 about 2 weeks ago and the markings on it were for the positive leads, not the negatives (like every other WG I've worked on) and it's pretty easy to get confused and maybe put one in backwards.

and I guess the last point to consider, are you using the same game to test all these monitors? verify it's not the game itself doing this.

good luck, hope you can figure it out.
 
I am using the same game for every monitor as I was just swapping each chasis into the same cab as I repaired it. The white screen is what lead me to recap and replace flyback. I guess I am going to have to start checking each transistor, capacitor, and diodes that have yet to be replaced.

Jason
 
Back
Top Bottom