PLS HELP! Punch-Out PCB - Jail Bars & No Boxers on bottom, top is perfect,
hello guys, hopfully someone knows the cure to a problem im having with a new set of Punch-Out pcb's that i just got.
Well everything was all messed up bad......
I inspected the 3 boards, 'CPU' - 'VIDEO' - 'BAK'
and i found a 5 of the ceramic disc capacitors that had cracks or chunks taken out of them, so i replaced them, also i replaced the 3 220uf 16v Ele Caps on the 3 boards due to them having crudd on them and figurd since i has the solidering iron out i would replace them,,
Then i try them out and this is what i get when i turn it on...
the top and bottom does not disply the NINTENDO PUNCHOUT !!! logo
but the bottom monitor does display the nintendo copywrite
then i got to try the games and this is what i get
TOP MONITOR: Everything looks GREAT!! The color is PERFECT!! And the sound is there!
BOTTOM MONITOR: This is the bad one...
i get Jail Bars across my screen, the picture kinda looks like there is wayyyy to much blue color in it, no sound, and no boxers [no glass joe]
now i do have another set of working punchout pcb's and thoes work perfect so i know this has nothing to do with my monitors its in the pcb's
also when i put it in service mode it says that everything 'ROMS' check out OK
So now im not shure what my next step is... anyone know where about the spots that i should look for damaged componets are?
And i did allredy replace the ones that cought my eye..
So whats do i do now...
Someone PLS help!
I need a KLOV doctor to fix my problem!
attached are some pictures of my prob....
hello guys, hopfully someone knows the cure to a problem im having with a new set of Punch-Out pcb's that i just got.
Well everything was all messed up bad......
I inspected the 3 boards, 'CPU' - 'VIDEO' - 'BAK'
and i found a 5 of the ceramic disc capacitors that had cracks or chunks taken out of them, so i replaced them, also i replaced the 3 220uf 16v Ele Caps on the 3 boards due to them having crudd on them and figurd since i has the solidering iron out i would replace them,,
Then i try them out and this is what i get when i turn it on...
the top and bottom does not disply the NINTENDO PUNCHOUT !!! logo
but the bottom monitor does display the nintendo copywrite
then i got to try the games and this is what i get
TOP MONITOR: Everything looks GREAT!! The color is PERFECT!! And the sound is there!
BOTTOM MONITOR: This is the bad one...
now i do have another set of working punchout pcb's and thoes work perfect so i know this has nothing to do with my monitors its in the pcb's
also when i put it in service mode it says that everything 'ROMS' check out OK
So now im not shure what my next step is... anyone know where about the spots that i should look for damaged componets are?
And i did allredy replace the ones that cought my eye..
So whats do i do now...
Someone PLS help!
I need a KLOV doctor to fix my problem!
attached are some pictures of my prob....
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