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#1 2016-07-15 09:01:07

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 954
Website

840av not working after re-cap, ?

wash wash wash....

re-cap

Toothbrush and acetone, and scrub scrub scrub, flood the IC...  scrub some more... that cap shit is in there good.... DUE to the Vertical mounting of the main board.
SCSI SOUND EGRET chips... including the DSP and other VLSI chips... CAP GOO.

Here is the trick...

WASH WASH WASH again!!!  because the acetone + cap goo is still conductive... infact if you don't wash, and power it up... you maybe even notice it had got worse.

the 840av is by far the WORST board because of the IC's every where and the find pitch of most of the chips... and the electrolytics placed like everywhere.....

Last edited by uniserver (2016-07-15 10:35:28)


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#2 2016-07-15 11:32:00

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 954
Website

Re: 840av not working after re-cap, ?

i am beginning to think these main boards need an ultra sonic cleaner....
there is no way humanly possible to get the cap goo under many of these chips...


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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