Neo Candy 29 - Monitor Brightness Clipping

daskrabs

Ukyo's Doctor
10 Year Member
Joined
Aug 23, 2010
Posts
1,200
The stock monitor in my cab (Hitachi GMK-29FS2) has an issue with the brightness where if the overall screen brightness goes above a certain level, it gets noticeably dimmer instantly. For example, it can be easily noticed on the Neo Geo splash screen or the opening Nazca screen of Neo Turf Masters. It happens on screens that are not all white like these, but those are just obvious examples. I've already installed a cap kit, so it's likely not a cap. Maybe the flyback or an IC? Anyone have a schematic?
 

StaticX

The b00bs., Z'OMG The B00BS!,
15 Year Member
Joined
Feb 27, 2005
Posts
571
I have the same issue with my AW cab
:/
 

StaticX

The b00bs., Z'OMG The B00BS!,
15 Year Member
Joined
Feb 27, 2005
Posts
571
Whatever came with the aw cabs back in the mid 2000's.wei-ya? A friend told me once that maybe it could be the power supply?
 

StaticX

The b00bs., Z'OMG The B00BS!,
15 Year Member
Joined
Feb 27, 2005
Posts
571
Bump for this guy. Any help you smart guys? :)
 

daskrabs

Ukyo's Doctor
10 Year Member
Joined
Aug 23, 2010
Posts
1,200
I'm leaning towards the flyback being at fault. No luck finding a replacement though. There's a ton of Hitachi flybacks out there, but none that match exactly.
 

voltronbadass

nerdsigh
10 Year Member
Joined
Jul 15, 2008
Posts
1,575
Ive got a working all the way recapped gmk 29 chassis in my closet if you end up wanting to buy a replacement.
 
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