Tutankham only runs at 4.2 volts???

TheOldMaster

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I know, i tried the repair section, but any ideas here?

sometimes the last thing someone wants to do is look at more stuff to be repaired.

heres the scenario:

the game started having sprite problems, like incorrect color bitmapping on the explorer.

so i figured start by checking voltages. voltage was 4.2 ,

the game has a switcher power supply,so just to be safe i tried a new one and no luck.

i set the new switcher at 5 volts and just solid color screens game does not boot.

when i lower to 4.2 volts it works fine but with slight sprite problems in

the vertical center of the screen.

any help apreciated, thanks.
 
I know, i tried the repair section, but any ideas here?

sometimes the last thing someone wants to do is look at more stuff to be repaired.

heres the scenario:

the game started having sprite problems, like incorrect color bitmapping on the explorer.

so i figured start by checking voltages. voltage was 4.2 ,

the game has a switcher power supply,so just to be safe i tried a new one and no luck.

i set the new switcher at 5 volts and just solid color screens game does not boot.

when i lower to 4.2 volts it works fine but with slight sprite problems in

the vertical center of the screen.

any help apreciated, thanks.

Did you pull, clean and reset removable chips??
 
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