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Author Topic: Pc engine white, No Video.  (Read 850 times)

thesteve

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Re: Pc engine white, No Video.
« Reply #15 on: February 16, 2015, 07:34:29 PM »
that doesnt sound like a chip failure
sounds more like something isnt connected
try to get video from pin40 HUC6260
if not even a flicker you not getting power/ground
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xinsizionx

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Re: Pc engine white, No Video.
« Reply #16 on: February 17, 2015, 12:35:03 AM »
its a pretty rough setup, but i have a wire to ground on the ext port and a wire to pin 40 on the c6270 hooked up to a rca jack. most of the time i can get a flicker, but sometime i still get a solid black screen.
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thesteve

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Re: Pc engine white, No Video.
« Reply #17 on: February 17, 2015, 06:07:40 AM »
try a meter on pin40
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xinsizionx

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Re: Pc engine white, No Video.
« Reply #18 on: February 17, 2015, 08:04:36 AM »
It reads 4.3v
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thesteve

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Re: Pc engine white, No Video.
« Reply #19 on: February 17, 2015, 08:24:46 AM »
that sounds like a white screen
got a different TV to try?
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xinsizionx

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Re: Pc engine white, No Video.
« Reply #20 on: February 17, 2015, 08:45:21 AM »
i tried another tv, one that will not allow you to change input unless it detects a source. it allowed me to change and then displayed no signal.
« Last Edit: February 17, 2015, 08:52:26 AM by xinsizionx »
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xinsizionx

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Re: Pc engine white, No Video.
« Reply #21 on: February 17, 2015, 10:46:17 AM »
while checking the soldering for pin 40, i lifted the leg and the pad. i ran a jumper wire from the leg to the via and I'm getting 2.083v now. i know i probably killed this. i couldn't be more upset at myself.
« Last Edit: February 17, 2015, 11:24:55 AM by xinsizionx »
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thesteve

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Re: Pc engine white, No Video.
« Reply #22 on: February 17, 2015, 11:51:15 AM »
2.083V is a good voltage at pin40 with it running correctly
sounds like you may just have a TV compatibility issue
whats your TV?
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xinsizionx

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Re: Pc engine white, No Video.
« Reply #23 on: February 17, 2015, 12:08:51 PM »
so before i had 4.3v, now i messed up the leg and in getting the right voltage? lol ill try this again. the tv i first used is the one i have numerous retro console on, plus the pc engine duo you helped me fix.
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thesteve

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Re: Pc engine white, No Video.
« Reply #24 on: February 17, 2015, 12:16:16 PM »
ok if the duyo works, the tv should be fine
the 4.3 was a no boot (possible dirty hu slot)
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xinsizionx

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Re: Pc engine white, No Video.
« Reply #25 on: February 17, 2015, 12:25:00 PM »
the 4.3v was with no card, just checking with a multimeter. the 2.083v was with no card as well, but after i lifted the pad and ran a jumper. i tried 3 tv's and all the same thing.
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xinsizionx

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Re: Pc engine white, No Video.
« Reply #26 on: February 17, 2015, 12:31:31 PM »
i tried it on a sony trinitron tube tv(my retro setup), an LG lcd, and an insignia lcd.
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