Hardware > Hardware (Classic 16-/32-Bit)

NVRAM Problems

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guest2484:
btw , i forget to say, i use a socket of 24 pins put in on in the U64, with a dallas replacement chip, the DS12887...if any can give me a photo from back of board, speacially the area of chip U64, for see traces and look mine, because apprently someones of mine are broken :(

thx!

guest2484:
Me again , hehe sorry for massive post, but i wanna really make it work this falcon. I attach here with links some photos of the stuff, the white you see is a marker for repair traces with this i repaired traces. My doubt is in the back of the board, The connection to one r24 i see this trace, but im doubt if exist a trace to the resistence R237 or only to r24. Thats what i need a photo of back, for compare this little doubt. Sorry for the photo of back, is a bit bad, but if you need more quality i can try to get another one...

THX a lot for your patience and time!


http://www.postimage.org/image.php?v=TsEWm6r
Front U86

http://www.postimage.org/image.php?v=PqiEC2J
Pen for repair traces

http://www.postimage.org/image.php?v=TsEWSxi
With chip

http://www.postimage.org/image.php?v=aV2xl70
back board

Arthur:
Look your PM. ;)

guest2484:
Hi all,

finally is FIXED!!!!

With the great help of a guys from .de forums, Arthur and simbo from atari-forums.com, the nvram was fixed. Whats the trouble? is a bit hard to find but finally, was first one trace from U64/Pin13 RTCCS <-> U56/Pin75 was broken, i fixed, and the 5v of pin 1 and 24 was dead, i take 5v from a near chip, the u68/pin20, with this one i get the 5V again. I fixed too other trace, but was easy, because is little break. I attach the pictures in case if someone have some weird troubles of nvram like me. Now my next step, if you can help, is search cpx, xcontrol, etc in english, because this falcon was from a .de owner.

Thx for read this ...
greets

http://img291.imageshack.us/i/dsc00909v.jpg/
http://img43.imageshack.us/i/dsc00908jl.jpg/

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