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(Topic ID: 195121)

Flash Gordon won't boot up properly

By aKa

6 years ago


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  • 12 posts
  • 4 Pinsiders participating
  • Latest reply 6 years ago by aKa
  • Topic is favorited by 2 Pinsiders

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#2 6 years ago
 
AMS

barakandl

nvram.weebly.com

12y 132K 10,411

check mpu tp3 for +21vdc

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#6 6 years ago
 
AMS

barakandl

nvram.weebly.com

12y 132K 10,411

Your 82 ohm 2w resistor at r11 looks burnt. That will lead the U8 being under voltage. That resistor drops down the 12v for the ram / reset stuff.

Can you check P22, top left corner, of u8 for +5vdc? That resistor needs replaced either way.

2 weeks later
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#11 6 years ago
 
AMS

barakandl

nvram.weebly.com

12y 132K 10,411

I told you good advice about fixing your burnt R11, did you follow it? Do new R113 and R16 while you are at it.

Non MPU stuff would be a power supply issue. Doesnt sound like that is the case to me.

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