Atari Area 51 Site 4 not booting

Flocke28

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Hi all.. i got a Area 51 Site 4.. it works for 15 min but then black screen and its not booting anymore.. voltage checked fine.. i removed the battery for reset the bios.. but no luck.. harddrive works, check with cf adapter also no changing.. swapped the ram too, also no luck

Any suggestions?
 
I don't think those can work with CF adapter, has to be SD. but if it boots up and runs at all maybe you got lucky. what goofs up on these is the motherboard caps. I had bought one in 2010 and it would lock up on me probably after about 15 minutes. something to consider
 
I swapped the electrolytics on the mainboard, but also no luck.. bootscreen isn't showing up..
 
The mainboard has 2 voltage ragulators for 3.3v.. the one more the outside of the pcb had an output of only 2.6v.. the other one good 3.3v.. maybe the one regulator is faulty?.. have to order one EZ1587CT


Or it could be a 2.5v EZ1587CT.. there is no info about the voltage on the regulator 😒

Seems without a print of the votage on the regulator it is an adjustable regulator https://ace4parts.com/products/ez1587ct-h-semtech-1-3-5-7v-adjustable-positive-voltage-regulator


Next step i ordered a new simm ram module
 
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