Apple IIGS start up failure

[logan48maer]

I just got this new to me IIGS delivered today. When I try to start up I get this screen. It won’t try to lost from a 3.5 or 5.25 drive or from my Floppy EMU. Am I doing something wrong here? Any help would be greatly appreciated!

 

[logan48maer]

I just got this new to me IIGS delivered today. When I try to start up I get this screen. It doesn’t even try to boot from a 3.5 or 5.25 drive or from my Floppy EMU. Am I doing something wrong here? Any help would be greatly appreciated!View attachment 63868

 

[bibilit]

Probably an issue with hardware.

ram issue maybe ?

 

[Arbee]

Yeah, that machine's broken. Check if the battery's leaking (and remove it immediately if it is).

 

[logan48maer]

I examined the board and the battery was already removed. It looks clean too. Could it not be starting properly because there isn’t a battery?

 

[Skate323k137]

Complete lack of a battery shouldn't cause that as far as I know. You can try reseating the ROM at UI10 next to the CPU just in case, as well as any other socketed chips if you're comfortable with it. Bonus points if you clean the IC legs carefully. It could also be a RAM issue but your RAM is soldered in, making that a bit more difficult to check.

 

[bibilit]

Can you have a look at those two spots ? Hard to see but look Strange to me.

 

[Skate323k137]

Can you have a look at those two spots ? Hard to see but look Strange to me.

Good eye! Definitely there could be a few traces suspect there. At least they all look fixable on first glance [if they are broken].

 

[logan48maer]

Seemed to be some dust that wiped off. Do you see any other suspect points that I should address?

 

[logan48maer]

Update: I took out the board and cleaned it with IPA, I reseated the ROM and cleaned it too. Still encountering the same problem. On a separate note. I have a GGLABS GZ/80 7Mhz card that I'd like to eventually use in this machine if I can get it up and running. Does it matter what slot the accelerator card is placed in, and do I need to do anything other than just install the card? Are there any board modifications that I will need to make?

 

[Byte Knight]

I'd reseat all the roms and cards to start with.

 

[waynestewart]

Try the self test
The self-test is activated by pressing Open-Apple and Option on power up

 

[Arbee]

That GGLabs card is a Z80 CP/M card, not an accelerator.

 

[bigmessowires]

I'd guess this is more likely a RAM issue than ROM. The computer is doing the right thing at start-up (ROM) but there's a repeating pattern of wrong lines in the screen buffer. Could be bad RAM, or a bad address line?

Also I just noticed there are two separate threads about this same IIgs problem going simultaneously here. From the other thread:

Try the self test
The self-test is activated by pressing Open-Apple and Option on power up

 

[logan48maer]

Try the self test
The self-test is activated by pressing Open-Apple and Option on power up

I tried the self-test and got

"System Bad: 01353300"

Any idea what this points to specifically?

 

[logan48maer]

I'd guess this is more likely a RAM issue than ROM. The computer is doing the right thing at start-up (ROM) but there's a repeating pattern of wrong lines in the screen buffer. Could be bad RAM, or a bad address line?

Also I just noticed there are two separate threads about this same IIgs problem going simultaneously here. From the other thread:

There are two separate threads accidentally. I made a typo in the first one and tried to correct it by editing the post, but somehow it created a second duplicate post. (This one were in now) I have tried to delete the other one but couldn’t figure out how to.

I did try running the self test and got the following result.

 

[logan48maer]

 

[zigzagjoe]

Csa2 Apple II FAQs ERROR LIST

Looks like that's an issue with ROM. Reseat it, for starters, as Byte Knight said.

 

[Arbee]

That screenshot *really* looks like bad Mega II-side RAM. It's possible the code isn't being reported correctly because of that.

 

[logan48maer]

That screenshot *really* looks like bad Mega II-side RAM. It's possible the code isn't being reported correctly because of that.

Is that possible to repair? If so where can I find instructions?