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Error 22 on netdimm after restarting

stasalein

stasalein

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Hi everybody, my Naomi was on for about 24 hours then turned if off for a couple of hours then after powered on again suddenly i get error 22 every time.
i tried cleaning the contacts, took it off the shell and held both board during boot, removed the battery, tried to switch to gdrom boot, removed the keychip nothing seems to help, the naomi works fine with other carts just the net dimm.

Any ideas anybody?
 
Problem with top PCB connection on simm board. Try to remove the top PCB, clean the connector and place the PCB. Test and tell us what happens.
 
djsheep said:
How’s your voltages? What PSU/Cab/Supergun are you using?
Click to expand...
Here is the PSU, i use also a downscaler from 220v to 110v just to be safe
 

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Another thing forgot to mention - 2 red LEDs light on bottom board on top board the LEDs near the ethernet jack light on power for a sec but then nothing
 
Either your PSU is faulty/wrongly tuned (you need at least 3.20V (3.3V recommended) on load and 5.0V on load for a dimm setup; or your dimm board buffer chip is dying.
 
mathieulh said:
Either your PSU is faulty/wrongly tuned (you need at least 3.20V (3.3V recommended) on load and 5.0V on load for a dimm setup; or your dimm board buffer chip is dying.
Click to expand...

If the PSU is the problem - any way to test it with other carts? if it's the buffer chip - is it on top or bottom board and can it be replaced?
 
stasalein said:
If the PSU is the problem - any way to test it with other carts? if it's the buffer chip - is it on top or bottom board and can it be replaced?
Click to expand...
You would need to test with another PSU or another dimm board. Cartridges don't draw nearly as much power, especially on the 3.3v line so that's not a good test.
 
mathieulh said:
You would need to test with another PSU or another dimm board. Cartridges don't draw nearly as much power, especially on the 3.3v line so that's not a good test.
Click to expand...
Uh ok thanks, ordered another dimm, should be here by weekend and i'll test, thanks for the help
 
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