My 500+ Project

[Azryl]

Damn that is a lot of acid damage to the mobo...  its crawled its way to many IC and sockets  so sad to see a A500+ in this condition.

The Gary chip should be okay, the socket might clean up well without needing to replace. A thin stiff brush and alcohol to clean away all the mess. The resisters on the right hand side of the removed battery look bad, maybe if you going to resolder a Gary socket you should replace these as well.

Best of luck! Hope you can revive this poor Miggy

Az

[Azryl]

The A500+ are Rev8a motherboards if I remember correctly... different Agnus socket + pin arrangements compared to a normal A500.

I would just replace every green socket or surface soldered chip as possible. Resisters will be available from electronics places, IC's from a standard A500 should swap. Solder in your new sockets and jumper any corroded tracks if able. See if you can bring it back from the dead

Amiga's are much nicer with 2meg chip ram!

Az

[Azryl]

If you lift any of the green protective paint off the copper tracks with your alcohol, go buy some cheap girly nail polish, a bright colour!

This can be painted over any exposed areas of the motherboard/copper you need to repair, works well.

Also, if you have small sections of track that are suspect or badly corroded, buy a rear window demister repair kit from a local car spare parts/autobarn/repco. The silver conductive paint can be used to redo the damaged tracks for short distances. Wait until dry then cover with nail polish

Az

[Azryl]

Awesome! Good to hear about the tracks after the clean up...  replacing sockets is a pain, make sure you do not make any solder bridges on the legs. Check with a magnifying glass if you have one.

Hope Gary works for you.

Az

[Azryl]

When you have this A500+ working again, you will find very little speed increase with the 68010 at standard clocks + no cache

you need to find one of these! http://amiga.resource.cx/exp/adspeed

I have one in a box somewhere

oh, I also have one of these! http://amiga.resource.cx/exp/mtec520i
(installed in my a2000 atm with budha card+ 4gig HD, cdrom, amber flicker fixer and a picasso II )

and one of these http://amiga.resource.cx/exp/blizzard500

and 2x of these as well http://amiga.resource.cx/exp/supra28

finally one of these http://amiga.resource.cx/exp/pamc500
(installed in another a2000 with gvp8+ 2gig scsi + cdrom)

yeah, I have too much stuff... some in boxes never installed

ah well.... Amiga is addictive!

Az

[Azryl]

Keep up the good work!

Hope we hear a success story soon

Az

[Azryl]

That lifted trace, you might want to see where it starts and solder a wire link from source to socket pin.

Insert Gary and see if the machine boots. The trace might look solid and connected along its length but more than likely there is a break in it.

Az

[Azryl]

LOL.. yeah that was a monster video

okies, I would swap the CIA chips...  and see if that gets any further into the boot process

from the cycling power light I would say Gary is faulty, a probable memory or bus conflict.

Before saying the mobo is dead, you really should swap other chips (other than agnus) and see if the board will boot, or gives the customary colours on boot. Better able to see the fault with the colour.

Az

[Azryl]

Gratz! I very nice ongoing build!

Az

[Azryl]

Awesome work! Nice use of the dremel too. Will be a very unique A500 setup when complete.

Az

[Azryl]

You "NEED" more than one of each Amiga, so find the funds for more and more machines and upgrades!

Yeah I speak from experience.......   I'm in the enviable place of having too much Amiga stuff

Az

[Azryl]

I just moved house, I have so much Commodore and Amiga stuff its nearly ridiculous, last count was 17x monitors! 1081,1084, 1701, 1702, 1802 etc

wayyyyyy too much really... some work, some don't and some I have never tested

Az

[Azryl]

Forgot the 1960 monitor hooked up to one of my A1200, NEC 3D hooked to another A1200 when I get new house organised.

Yeah, I do have a few too many Amiga monitors, as said previous, some in shed for storage now and I have not even checked they work!!

Well, if you ever drive past Benalla, Ned Kelly country in north east Vic I might donate a 1084 to a worthy Amiga user

az

[Azryl]

But postage would not be the same as face to face show all my cool Amiga + Commodore stuff to another user

And you might end up with some extra's if you had a car to fill with bits n pieces!
Got a box or 3 filled with C64's n 1541-11's etc

Az

[Azryl]

For Sale? Who sells their Amiga stuff?   Mind Boggles

Keep the Rev6a for when the Rev8 dies a mysterious death ie, agnus socket craps itself! They tend to do this during hot Aussie summers

Az