Chipset error color codes?

[graffias79]

Hi everyone.  I recently plugged my Amiga 500 in to see if it still worked.  (mostly because of the scare I got from the thread about the bad batteries leaking, since I have clone of the a501 clock/memory module installed).  When I turn it on there is no power light.  I'm using the same Micronik Bigfoot PSU that powers my 1200 just fine.  However I get a very blue colored screen.  I understand when you get a color instead of a workbench disk prompt it means chipset trouble?  What does blue mean?

Thanks

[BADHead]

it means   :-(  :-(  :-(  :-(  :-(  :-(  :-(  :-(  :-(

[graffias79]

well perhaps it doesnt have to end in such tragedy.  I have an A2000 that needs some TLC, can some of the components be transplanted into the 2000?  I also have a DCE minimeg 2MB agnus/chipram upgrade in the 500.  I know it was designed for the 500 and 2000, except i lost the instructions on which jumpers to cut/connect :-(  Also will the 2.04 kickstart I put in the 500 work in the 2000 or is it motherboard specific?

Thanks

[alx]

Just to confirm (from the Amiga Wiki) blue is a custom chipset problem.

The A500 and A2000 are very similar (despite what one member will say :-) ) and a lot of the components are the same in both.  I think that the kickstarts are compatible as well - but check with someone who actually knows before you do anything :-D

[whabang]

If I don't remember wrong, blue indicates an error in one or several of the custom chips.  Perhaps it's the ECS-expansion that is causing the problem? Have you checked for chip creep (chips "creeping" out of their sockets due to temperature changes)
The 2.04 kickstart ROMs should work perfectly in the A2000.

[N7VQM]

alx wrote:
The A500 and A2000 are very similar

The A2000 is similar to the A500 from the A2k 'B' revision onward.  The A2K 'A' version was based on the A1K motherboard.  

[graffias79]

Ok thx for the help so far, I dug out my 2000.  Realized it doesnt have a keyboard.  The bottom left says "Amiga B2000-CR Haynie/Fisher A/W312723 REV 6.  It has a 1.3 kickstart rom, I tried plugging it in but got a green screen!  Does anyone know what that means?  Will it even try to boot without a keyboard?  If this is going to work I will order a new keyboard from probably software hut.  I hope I can get this to work, its a 2000HD, has an a2091 "hard card" not populated with any ram tho.  I had to remove the battery from the MB cause it was starting to leak as well.  I hope that didn't do much damage  :-o

[N7VQM]

graffias79 wrote:
I tried plugging it in but got a green screen!  Does anyone know what that means?

A green screen during boot appears to mean a problem was found in ChipRAM.  You may just need to get in there and reseat the ChipRAM to fix this problem.

More can be found about what those colors at boot mean at http://amiga.emugaming.com/selftest.html

[DonnyEMU]

Some Amiga's do require custom chip reseating. It's annoying but be careful not to shock or damage pins when doing so..

[N7VQM]

DonnyEMU wrote:
Some Amiga's do require custom chip reseating.

My A500 needed to have everything that's socketed (including CPU) reseated about once a month.  It was very annoying but that's life.

[graffias79]

Thanks everyone for your help.. very much appreciated.  Ironically I got my 500 to work using these techniques LOL  I'd still like to get my 2000 working.  But that will have to wait a while.  At least the offending battery has been removed!

Again Thanks!

[boglo]

Ok I got one. I'm getting a yellow/green screen. I havent run this thing for like 10 years, soooo.
What is it ? Memory, chips bad what?
boB

[Jope]

Could be memory chips, could be an oxidized Agnus socket. Use a PLCC puller, remove and reseat the Agnus.

Don't use a pair of screwdrivers for old PLCC chips in Amigas, as you will crack the socket.

[darkage]

Some lemon juice probably wont hurt to get off the oxidation layer on the IC legs.

[paul1981]

Thanks everyone for your help.. very much appreciated.  Ironically I got my 500 to work using these techniques LOL  I'd still like to get my 2000 working.  But that will have to wait a while.  At least the offending battery has been removed!

Again Thanks!

If there's any leakage from the battery onto the motherboard/pins etc then you need to neutralise it with lemon juice...or it will continue to do damage (wouldn't hurt to treat the area just to be safe).