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thank you Elfen i'll try this way and let you update as i'll do this work!

]Hello Guys i recently acquire a Macintosh IIx in very bad conditions , i recapped logic board ( only the 47uF16v and one axial 10uf16v ) after recap the computer only starts with battery on psu contact as suggested, i followed your guides and found a lot of broken traces , now computer starts...

Thank you Guys! Thanks Uni! i'm sure i'm not going to get frustrated with this Board ! I'll follow your suggestion!

Hi Guys i have recently restored an LC , apparently working , starts , boots sounds but ADB port does not work, i have recapped LB but the problem still remain. Ferrix  suggest me to check the FUSE, i did not find it , Normally they are markedd with the F letter , can someone tell me where is...

Hi Techknight  thank you , i have tried also in other holes but the only values i registered were those, not the right instrument .

Keep it! Asap i'm considering to send you some MB to repair  thanks UNI

Hi Ferrix have you recapped macintosh portable original ac adapter? I have followed your videos on you tube and repaired 3 powerbooks 100 adapter ( of 5 not working)  My Macintosh portable ac adapter is not working stable , now i use an aftermarket 1,5 amp but i'd like to repair the original...

Hy Buddies! Very hard to do with Meter, mine is not the best , testing i report these values as in pics attached I've broken inductor legs desoldering it ( don't ask me why i've done it! I'm a real As..hole) Grazie Ferrix i'll get in touch with you in italian ( my english is not so good) ...

Hy Everybody  someone can help me, i'm not in the position to finding in Italy  the same inductor  PULSE PE-53082  8946 IP that  has been damaged, I can not find the datasheet and I ask to you if you know a replacement part with the same characteristics  thank you !!

Yes Yes Yes  many thanks Techknight!!!

Problem Solved : thank you Guys , replaced QP1 with CNY75B 023 A TFK4 0883 now Classic II is back to life !

i think i'll do it! Thank you

thanks at first i'll try replacing optoisolator

original is CNY75GB  245 A TK4 0884 , i found on eBay CNY75B 023 A TFK4 0883 can replace original?

Hi there  HD is perfect i have tried also with another hard drive , external SCSI HD and tested it on another Macintosh  , when i wrote hard drive spin intermittently mean that it seems that low voltage is powering hard drive, and computer intermittently boots and hard drive spin, then stop...

Hi there  HD is perfect i have tried also with another hard drive , external SCSI HD and tested it on another Macintosh  , when i wrote hard drive spin intermittently mean that it seems that low voltage is powering hard drive, and computer intermittently boots and hard drive spin, then stop...

Hello everybody I have a problem with my Macintosh Classic II. the computer would not start more '. I made the first tests with hot air to the analog board and give satisfactory results booting. The image was moved and the hard disk intermittently started and stopped. At this point, I replaced...

Hello Everybody very busy at work ! I have not had time to dedicate to my Macintosh! I have not still tested! I found an SE30 perfectly working, it will help me to check connection. Thank you Guys for your support!

Thanks Uniserver 

Thank you TechKnight & falen5  !