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SE/30 with Carrying Case and non working Display


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Just picked up a SE/30 here in the UK with a Burgundy Mac carrying case. System was sold as not working.  Came complete with ADB keyboard and mouse and a couple of manuals.

 

Having taken an initial look the system powers on, chimes, and I can hear hard disk activity.   There is however no screen.  

 

I opened up and when I tried to ground the high voltage I got no spark, so I am thinking the Analog board is the place to start.  There is a pattern of reside across the inside top of the case and the top of the CRT seems to have a black residue -I have done a little cleaning with IPA and the stuff is really black!

 

The Logic board looks good, I think the capacitors will need to be replaced but are not a priority for now.  I looked at the memory slots and there seems to be a mixture, some have plastic clips but there are 4 with metal clips - I suspect these may have been replaced at some point.

 

The HDD is a Quantum ProDrive LPS which sounds healthy and makes all the fight noises one startup. 

 

This is my first foray into classic Macs so any advice on the dead display would be appreciated.  I have attached some photos to try and show what I am talking about.

 

IMG_0933.HEIC IMG_0932.HEIC IMG_0917.HEIC IMG_0916.HEIC IMG_0914.HEIC IMG_0915.HEIC

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Firstly, welcome to the forum. Secondly, well done on acquiring this - I was also watching this one on eBay and was close to bidding.

 

Black dirt in these is common, it just means it was turned on for long periods and has never been cleaned, it was possibly used in a factory/workshop.

 

Have you reseated all the components on the analog board? If the video board on the CRT neck is loose/not seated correctly, that will also result in no video.

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5 hours ago, joshc said:

Firstly, welcome to the forum. Secondly, well done on acquiring this - I was also watching this one on eBay and was close to bidding.

 

Black dirt in these is common, it just means it was turned on for long periods and has never been cleaned, it was possibly used in a factory/workshop.

 

Have you reseated all the components on the analog board? If the video board on the CRT neck is loose/not seated correctly, that will also result in no video.

I am intrigued about the mix of ram slots - some with metal tabs and some with plastic.

 

It was someone's university machine - I may have some docs to give back to them if I can get it working!!

 

I've stripped down the machine, removed the gooseneck, motherboard and reseated them afterwards.  Still no display.

 

Next time I will remove power supply and analog board and have a close visual inspection.

 

Christmas duties tomorrow and beyond will take priority

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19 hours ago, cannfoddr said:

 

The problem with that is that the forum won't display them inline or know what to do with them, so it's still something of a pain.  You'll generally get people paying more attention / being more helpful if you post images as JPEGs :-).

 

edit: sorry for the double post, thought I was editing.

Edited by cheesestraws
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Here are some JPEGs...

 

Motherboard:
63042259409__7B6353B8-06B9-47CD-9B12-AB8313609599.thumb.jpg.ed2bc0f8ac54517823be7083ad5fcde7.jpg

 

Ram slots 4 with metal clips and 4 plastic:

IMG_0919.thumb.jpg.0eac4deebe5932f50199d525af0bf94f.jpg

 

4 x 1MB (large) and 4 smaller modules like these:

IMG_0929.thumb.jpg.e329a9b4c0274980d05d15a506a067c7.jpgIMG_0928.thumb.jpg.005545623a080bbe709a853c3392e72a.jpg

 

Some capacitor shots - they will get replaced but look ok visually:

IMG_0923.thumb.jpg.db870ecd407c1a057c607ffd11011018.jpgIMG_0922.thumb.jpg.c348803d203be32daee5117faaef3993.jpgIMG_0921.thumb.jpg.f3a316c7ff317b4a2b5111586e21b042.jpg

 

Lots of crud on Fan and inside of case, top of display is black when cleaned with IPA:

IMG_0914.thumb.jpg.7b338f2e31ea87fc4ee2a13e1e793aa0.jpgIMG_0933.thumb.jpg.eff9ecdb203985af0cd418715669e647.jpgIMG_0932.thumb.jpg.e2a1ea6c3eea178b9b83a86da761e4b0.jpg

 

Analog board:

IMG_0917.thumb.jpg.410402d112e125ef6570cfafeeca750c.jpgIMG_0916.thumb.jpg.6a446586d848b9ea350034f75507c672.jpg63042263137__24DE4982-701F-4D4A-A0F3-ACA4253A44F7.thumb.jpg.87a02b3e31898747a5baa2f845c4f3b2.jpg63042261111__DE713416-5B38-4E8A-B428-2C33A73274DB.thumb.jpg.3ff14977ed34ef9927107afcaf7235e4.jpg

 

I found a battery coded 10 89 which I am guessing may be October 1989 which was intact:

 

IMG_0924.thumb.jpg.bacc6cc014c6342305c36f13b99ea9f7.jpg

 

All in all a pretty tidy machine - 2 manuals and a burgundy carrying bag.

 

IMG_0915.jpg

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4 hours ago, cheesestraws said:

 

The problem with that is that the forum won't display them inline or know what to do with them, so it's still something of a pain.  You'll generally get people paying more attention / being more helpful if you post images as JPEGs :-).

 

edit: sorry for the double post, thought I was editing.

See above - good point, there is also a low quality startup vid.

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First off the logic board has to be recapped, and cleaned. the 74LS166 could be defective as well. 

 

Second, troubleshooting help should be in the compact mac forum. 

 

and Third, HEIC files need to die a horrible firey death. That is starting a whole 'nother format/compatibility war again. I dont use the latest and greatest software, so not even the Microsoft patch linked above works. Jpegs please. (At least you did post jpegs)

Edited by techknight
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