amiga.org
     
iconAll times are GMT -6. The time now is 05:52 PM. | Welcome to Forum, please register to access all of our features.

Amiga.org Amiga computer related discussion Amiga Hardware Issues and discussion amiga 500 plus (dead?)

Amiga Hardware Issues and discussion This forum is dedicated to the discussion and resolution of issues related to Classic and Next Generation Amiga hardware. Got a problem with a piece of hardware? Click to speak.

Reply
 
Thread Tools Display Modes
Old 05-08-2012, 11:17 AM   #16
Snoozy
Technoid
Points: 2,767, Level: 32 Points: 2,767, Level: 32 Points: 2,767, Level: 32
Activity: 1% Activity: 1% Activity: 1%
 
Snoozy's Avatar
 
Join Date: Sep 2011
Location: UK
Posts: 250
Default Re: amiga 500 plus (dead?)

When i had green screen on my 1200 people were all going on and on about faulty kickstart ram.

In my case it was a damaged trace under the kickstart rom chip that could only be seen once the rom chip was removed.

Before suspecting your ram i would take a magnifying glass and conduct a full exam of the circuit traces of your motherboard...repair of damaged traces is often only a 2 minute soldering task

Last edited by Snoozy; 05-08-2012 at 03:34 PM..
Snoozy is offline   Reply With Quote
Old 05-08-2012, 11:36 AM   #17
spirantho
Premium Member
Points: 12,337, Level: 72 Points: 12,337, Level: 72 Points: 12,337, Level: 72
Activity: 53% Activity: 53% Activity: 53%
 
Join Date: Aug 2002
Posts: 1,405
Default Re: amiga 500 plus (dead?)

A photo of your particular motherboard was what I meant.

I've got several LS244s here... they cost about 1 on eBay. But yes, do check for traces and things like that - it could be something really simple that's gone wrong!
__________________
--
Ian Gledhill
ian.gledhill@btinternit.com (except it should be internEt of course...!)
Check out my shop! http://www.mutant-caterpillar.co.uk/shop/ - for 8-bit (and soon 16-bit) goodness!
spirantho is offline   Reply With Quote
Old 05-09-2012, 02:16 AM   #18
skywalkgr
Too much caffeine
Points: 7,519, Level: 57 Points: 7,519, Level: 57 Points: 7,519, Level: 57
Activity: 26% Activity: 26% Activity: 26%
 
Join Date: Jul 2002
Posts: 73
Default Re: amiga 500 plus (dead?)

Quote:
Originally Posted by spirantho View Post
A photo of your particular motherboard was what I meant.

I've got several LS244s here... they cost about 1 on eBay. But yes, do check for traces and things like that - it could be something really simple that's gone wrong!

Is it possible to use this chip that you have to my amiga 500+? Do i have to flash them or do something before i use them?
__________________
a12oo + blizzard 1230iV - 68030@50Mhz w/mmu- 10MbRam - Hitachi 2,5inch 40GB hard disk - OS 3.5
a5oo : Kickstart 1.3 , 512Kb of extra ram
skywalkgr is offline   Reply With Quote
Old 05-09-2012, 03:04 AM   #19
spirantho
Premium Member
Points: 12,337, Level: 72 Points: 12,337, Level: 72 Points: 12,337, Level: 72
Activity: 53% Activity: 53% Activity: 53%
 
Join Date: Aug 2002
Posts: 1,405
Default Re: amiga 500 plus (dead?)

Nope, the LS244 is a bog standard logic series chip. But to be honest it's probably not at fault, even if the legs are a bit green. The green will come from corrosion from the battery, yes, but chances are it's just on the surface. What you need to look out for is corrosion around the base of the chip - check the tracks around it. Any chance of a photo of your board around the 244?
__________________
--
Ian Gledhill
ian.gledhill@btinternit.com (except it should be internEt of course...!)
Check out my shop! http://www.mutant-caterpillar.co.uk/shop/ - for 8-bit (and soon 16-bit) goodness!
spirantho is offline   Reply With Quote
Old 05-09-2012, 04:55 AM   #20
skywalkgr
Too much caffeine
Points: 7,519, Level: 57 Points: 7,519, Level: 57 Points: 7,519, Level: 57
Activity: 26% Activity: 26% Activity: 26%
 
Join Date: Jul 2002
Posts: 73
Default Re: amiga 500 plus (dead?)

Quote:
Originally Posted by spirantho View Post
Nope, the LS244 is a bog standard logic series chip. But to be honest it's probably not at fault, even if the legs are a bit green. The green will come from corrosion from the battery, yes, but chances are it's just on the surface. What you need to look out for is corrosion around the base of the chip - check the tracks around it. Any chance of a photo of your board around the 244?
i will check the mainboard today, sorry i didnt have time yesterday to upload photo. I will do it today
__________________
a12oo + blizzard 1230iV - 68030@50Mhz w/mmu- 10MbRam - Hitachi 2,5inch 40GB hard disk - OS 3.5
a5oo : Kickstart 1.3 , 512Kb of extra ram
skywalkgr is offline   Reply With Quote
Old 05-09-2012, 05:01 AM   #21
skywalkgr
Too much caffeine
Points: 7,519, Level: 57 Points: 7,519, Level: 57 Points: 7,519, Level: 57
Activity: 26% Activity: 26% Activity: 26%
 
Join Date: Jul 2002
Posts: 73
Default Re: amiga 500 plus (dead?)

Quote:
Originally Posted by spirantho View Post
Nope, the LS244 is a bog standard logic series chip. But to be honest it's probably not at fault, even if the legs are a bit green. The green will come from corrosion from the battery, yes, but chances are it's just on the surface. What you need to look out for is corrosion around the base of the chip - check the tracks around it. Any chance of a photo of your board around the 244?
i will check the mainboard today, sorry i didnt have time yesterday to upload photo yesterday. I will do it today
__________________
a12oo + blizzard 1230iV - 68030@50Mhz w/mmu- 10MbRam - Hitachi 2,5inch 40GB hard disk - OS 3.5
a5oo : Kickstart 1.3 , 512Kb of extra ram
skywalkgr is offline   Reply With Quote
Old 05-09-2012, 06:52 AM   #22
spirantho
Premium Member
Points: 12,337, Level: 72 Points: 12,337, Level: 72 Points: 12,337, Level: 72
Activity: 53% Activity: 53% Activity: 53%
 
Join Date: Aug 2002
Posts: 1,405
Default Re: amiga 500 plus (dead?)

Excellent. Try and take good close-ups of both sides of the board around the chip.
__________________
--
Ian Gledhill
ian.gledhill@btinternit.com (except it should be internEt of course...!)
Check out my shop! http://www.mutant-caterpillar.co.uk/shop/ - for 8-bit (and soon 16-bit) goodness!
spirantho is offline   Reply With Quote
Old 05-09-2012, 05:15 PM   #23
skywalkgr
Too much caffeine
Points: 7,519, Level: 57 Points: 7,519, Level: 57 Points: 7,519, Level: 57
Activity: 26% Activity: 26% Activity: 26%
 
Join Date: Jul 2002
Posts: 73
Default Re: amiga 500 plus (dead?)

Here are some photos of my board, i hope that they will be helpful












__________________
a12oo + blizzard 1230iV - 68030@50Mhz w/mmu- 10MbRam - Hitachi 2,5inch 40GB hard disk - OS 3.5
a5oo : Kickstart 1.3 , 512Kb of extra ram

Last edited by skywalkgr; 05-09-2012 at 05:20 PM..
skywalkgr is offline   Reply With Quote
Old 05-10-2012, 12:00 AM   #24
spirantho
Premium Member
Points: 12,337, Level: 72 Points: 12,337, Level: 72 Points: 12,337, Level: 72
Activity: 53% Activity: 53% Activity: 53%
 
Join Date: Aug 2002
Posts: 1,405
Default Re: amiga 500 plus (dead?)

Have you checked all the traces around the battery thoroughly? especially the one that comes down between R11 and E10.
__________________
--
Ian Gledhill
ian.gledhill@btinternit.com (except it should be internEt of course...!)
Check out my shop! http://www.mutant-caterpillar.co.uk/shop/ - for 8-bit (and soon 16-bit) goodness!
spirantho is offline   Reply With Quote
Old 05-10-2012, 01:37 AM   #25
skywalkgr
Too much caffeine
Points: 7,519, Level: 57 Points: 7,519, Level: 57 Points: 7,519, Level: 57
Activity: 26% Activity: 26% Activity: 26%
 
Join Date: Jul 2002
Posts: 73
Default Re: amiga 500 plus (dead?)

Quote:
Originally Posted by spirantho View Post
Have you checked all the traces around the battery thoroughly? especially the one that comes down between R11 and E10.
With naked eye i can see that something is wrong there, but i am not an expert I will check the lines today with magnify glass. You think that if its something wrong it can be fixed easily? i hope for a yes!
__________________
a12oo + blizzard 1230iV - 68030@50Mhz w/mmu- 10MbRam - Hitachi 2,5inch 40GB hard disk - OS 3.5
a5oo : Kickstart 1.3 , 512Kb of extra ram
skywalkgr is offline   Reply With Quote
Old 05-10-2012, 03:58 AM   #26
zipper
Kindred of Babble-on
Points: 13,418, Level: 75 Points: 13,418, Level: 75 Points: 13,418, Level: 75
Activity: 5% Activity: 5% Activity: 5%
 
zipper's Avatar
 
Join Date: Feb 2002
Location: finland
Posts: 2,204
Default Re: amiga 500 plus (dead?)

You need a multimeter to check the traces. My A4000 clock stopped to work due to minor battery leak. The traces didn't look too bad - but a multimeter told that one was broken; easy fix with a jumper wire.
zipper is offline   Reply With Quote
Reply

Bookmarks

Tags
500 , amiga , dead

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump