stephenfalken
Member
Hey guys. My beautiful A500+ suddenly died on me yesterday evening and I really need help getting it going again!
I have had this machine for years and removed the battery years ago, and there was a little bit of leakage but nothing too serious and I cleaned it up best I could. The machine was running and I was playing Prince of Persia when the screen suddenly went black. I didn't think too much of it and figured the game had just crashed or something. Sadly a soft reset or complete power off now just produces a blank black screen
There is a signal being produced, as my SCART connection activates and changes to the correct tv source etc - but there is no output at all, just a stable power LED (ie it doesn't change brightness like a usual boot), and there is no floppy seek so it doesn't look like the boot sequence is even starting.
I have done some basic troubleshooting, I have an older plain A500 machine so one by one I tested each of the socketed chips in the other A500 and everything works as expected?! (apart from Agnus, I dont want to risk bending one of those pins)
I'm really not sure what to do next. I thought perhaps there was some battery damage that I hadn't noticed before, and a few of the pins on GARY were a little green, but not by much and all the chips came out of their sockets OK, so cleaned those up.
I just can't understand why it would suddenly give up like that while being used... it had been running a couple of hours perhaps.
Below are a few photos of the board, I have followed a few of the tracks in the battery area and checked for continuity and I cant find any broken. Can anyone spot anything amiss or point me towards anything worth checking?
Im really gutted as this is my only 2MB chip A500.
Note: The 68000 in here originally came from a different machine so has a bit of green on the pins (it originally belonged in an A2000), but the CPU works fine in the other machine so am happy that isn't at fault...
HELP!! ... and thanks in advance
Edit: Just remembered that the forum resized the images, HiRes versions here:
http://8bitdreaming.com/A1000/IMG_1844.jpg
http://8bitdreaming.com/A1000/IMG_1845.jpg
http://8bitdreaming.com/A1000/IMG_1846.jpg
http://8bitdreaming.com/A1000/IMG_1846.jpg
I have had this machine for years and removed the battery years ago, and there was a little bit of leakage but nothing too serious and I cleaned it up best I could. The machine was running and I was playing Prince of Persia when the screen suddenly went black. I didn't think too much of it and figured the game had just crashed or something. Sadly a soft reset or complete power off now just produces a blank black screen
There is a signal being produced, as my SCART connection activates and changes to the correct tv source etc - but there is no output at all, just a stable power LED (ie it doesn't change brightness like a usual boot), and there is no floppy seek so it doesn't look like the boot sequence is even starting.
I have done some basic troubleshooting, I have an older plain A500 machine so one by one I tested each of the socketed chips in the other A500 and everything works as expected?! (apart from Agnus, I dont want to risk bending one of those pins)
I'm really not sure what to do next. I thought perhaps there was some battery damage that I hadn't noticed before, and a few of the pins on GARY were a little green, but not by much and all the chips came out of their sockets OK, so cleaned those up.
I just can't understand why it would suddenly give up like that while being used... it had been running a couple of hours perhaps.
Below are a few photos of the board, I have followed a few of the tracks in the battery area and checked for continuity and I cant find any broken. Can anyone spot anything amiss or point me towards anything worth checking?
Im really gutted as this is my only 2MB chip A500.
Note: The 68000 in here originally came from a different machine so has a bit of green on the pins (it originally belonged in an A2000), but the CPU works fine in the other machine so am happy that isn't at fault...
HELP!! ... and thanks in advance
Edit: Just remembered that the forum resized the images, HiRes versions here:
http://8bitdreaming.com/A1000/IMG_1844.jpg
http://8bitdreaming.com/A1000/IMG_1845.jpg
http://8bitdreaming.com/A1000/IMG_1846.jpg
http://8bitdreaming.com/A1000/IMG_1846.jpg
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