Any1 know how to fix vertical collapse on Punchout? I replaced TR402/403,still broke
i was told to resoider TR402/403 due to cold issues, thats did not work, then i was told to replace both TR402 & 403 so did,
i put the NEW transistor into spot TR402 = C2073 = NPN 375.. put it all back together and turned on the machine....
STILL SAME PROBLEM.. white vertical line.... vertical collapse... fliped the test switch, samething...
so i decided to take the sound board out and use the TR403 = A940 = PNP 398 to put in the video board... since i wasnt able to find one localy..
so i did that and put the bad one from the vid into the sound... powerd it up and.....
STILL SAME PROBLEM.. white vertical line... vertical collapse... fliped the test switch, samething... and the sound still works so i know the TR403 was good...
So now I know that this problem has NOTHING to do with TR403 & TR402
So now what do I do???
At the place where i bought the new transistor he told me to look for any 100uf CAPS around the TR402/403 spots and replace them if the new transistors do not fix it, So I found one on the chassie that im going to try to replace, and see if that does anything....
Does anyone have any other ideas on what would be the problem or what can fix this????
I relly want to get this fixed!
And if anyone can help me, i would love you forever!
i was told to resoider TR402/403 due to cold issues, thats did not work, then i was told to replace both TR402 & 403 so did,
i put the NEW transistor into spot TR402 = C2073 = NPN 375.. put it all back together and turned on the machine....
STILL SAME PROBLEM.. white vertical line.... vertical collapse... fliped the test switch, samething...
so i decided to take the sound board out and use the TR403 = A940 = PNP 398 to put in the video board... since i wasnt able to find one localy..
so i did that and put the bad one from the vid into the sound... powerd it up and.....
STILL SAME PROBLEM.. white vertical line... vertical collapse... fliped the test switch, samething... and the sound still works so i know the TR403 was good...
So now I know that this problem has NOTHING to do with TR403 & TR402
So now what do I do???
At the place where i bought the new transistor he told me to look for any 100uf CAPS around the TR402/403 spots and replace them if the new transistors do not fix it, So I found one on the chassie that im going to try to replace, and see if that does anything....
Does anyone have any other ideas on what would be the problem or what can fix this????
I relly want to get this fixed!
And if anyone can help me, i would love you forever!
Last edited: