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#1 2014-05-28 21:13:31

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 956
Website

Common SE/30 Issues (After a ReCap/Wash) & Some Fixes to try!

( place holder )

First, Before posting anything in this thread, make sure you have already cleaned, scrubbed, washed your SE/30 Mainboard
and Removed old caps, and installed new ones…  All of them.  Yes even the 220uf and 470uf axials.

We're not going to argue what caps need to to changed or wether any of them need to be changed… Change them all.
It needs to be done period.

Now, That pesky leaking cap Goo has been known to cause some issues…
_ Can Shorts out I/C's
_ Can Rot out traces
_ Can Rot out pads
_ Can Rot out VIA's

And that is where these fixes come into play.
I have re-capped over 100 Of these things now (The SE/30 Mainboard).  And I can say with Great confidence,
There are in-fact some pattern failures!

I plan to document these here, with images,  Pictures speak a thousand words.
So I'll keep my TEXT short. Hopefully this info aids your Successful SE/30 Main-board repair!





Video Issues

Some Fixes



SCSI Issues

Some Fixes




Sound Issues

Some Fixes





ADB Issues

Some Fixes





ROM Issues

Some Fixes





Ram Issues

Some Fixes






FDD Issues

Some Fixes


#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 2014-06-23 20:55:28

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 956
Website

Re: Common SE/30 Issues (After a ReCap/Wash) & Some Fixes to try!

One of the biggest issues i have with the SE/30 is UE8,  there is a cap right there and it leaks its OOze right on/in UE8,  Sometimes the I/C goes bad because of this.   Sometimes you can hot air flow off UE8,  And flux&wick clean up the pads… get some fine grit sand paper and clean up the legs of UE8 and re attach it and it will work fine.

but sometimes you need a to replace it.

UE8 issues = No Video
UE8 issues = Video with lines (pin stripes)
UE8 issues = Can give you the same symptoms as a bad Video board ( on the back of the crt )

Here is the big one. and yes this has happen to me now 2 times.

UE8 issues = Depending on on what level of damage the cap goo has caused, And how the I/C has failed — can cause a No tone, No Boot!  Yup!

I was surprised my self, I found this one by accident...


^^ one other cause for Pinstripes in your SE/30 Video ^^

Datalines 0-7 come from the VRAM.
Sometimes the via's can rot (via's right near UE8) that are datalines  0-7 coming from the VRAM.
So in this instance you have to run a patch wire from the correct pin of UE8 to the vram.

You can check what one is bad with the se/30 schematics and and multimeter and check for 000 ohms 0-7
and if you get one with no continuity, that is the line.

Last edited by uniserver (2014-06-23 20:57:03)


#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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