Very poorly Apollo 1240 Recieve for Repair

[vk3heg]

Originally Posted by Dimlow

I feel so sad, This Apollo has had such a hard time i had to show you all its poor little lonely face.
[...]
But lets not judge him before he has his chance to give evidence.

Have a look at these..

How many tracks got lifted from the board?

[DoogUK]

Originally Posted by chiark

They have stolen a picture of my body, painted it, and badly photoshopped some guy's head onto it. Outrageous!

I could have a body like that if i neglect mine for a couple of months.....

[Dimlow]

Ok, i have looked at the board an run it in the 1200. I cant get it to work. Its looking like the processor is dead, i see no activity from it at all on the scope. Doog, did you ever have this running after you put that processor in there ?

There has been a mod to the board that shorts across the 1260 power regulator jumpers, i can see no reason for this having been done. So i removed the mods and checked the circuit. Its fine, i don't understand why this was done. Doog, can you tell me about this mod ?


I have checked the Clock circuits, they are fine, but i also changed the 74f74, there seems to be no damage under the 74f74 from the leaky battery it had.

I have found a 68040 here that i removed from one of my cards, i may try that later, but will wait for more info from doog first.

[DoogUK]

Originally Posted by Dimlow

Ok, i have looked at the board an run it in the 1200. I cant get it to work. Its looking like the processor is dead, i see no activity from it at all on the scope. Doog, did you ever have this running after you put that processor in there ?

There has been a mod to the board that shorts across the 1260 power regulator jumpers, i can see no reason for this having been done. So i removed the mods and checked the circuit. Its fine, i don't understand why this was done. Doog, can you tell me about this mod ?


I have checked the Clock circuits, they are fine, but i also changed the 74f74, there seems to be no damage under the 74f74 from the leaky battery it had.

I have found a 68040 here that i removed from one of my cards, i may try that later, but will wait for more info from doog first.

I have no knowledge of any such mod...did you take a pic?

The card was originaly and 040@25, working fine...i then changed the cpu for an 040@40....again worked fine for months then just died, i too thought it was the cpu at fault so changed back to the 040@25 and still no joy...but i cannot gaurantee that the cpu i swapped back in there was still working.