Has my A1200 motherboard just died after 3.1 roms installation?

[mradam83]

Hi Amigans, first of all I hope you've all had a good Christmas.

I'm having a big problem with my A1200.

I have one with the standard 3.0 rom chips and no other modifications to it - it still works on an internal floppy, no hard drive, no accelerators, and save for a minor issue with saving games which I sorted it has been fine for the past few weeks of having it.

For Christmas, I was gave some 3.1 rom chips (it is a 1200 set, not for the 500 or 600 Hyperion entertainment) a new keyboard and a cf hard drive kit along with a new set of 3.1 workbench discs.

So I followed the instructions to a tee that I've found on here and that came with the new components - careful removal with a flat edge screw driver until the original 3.0 chips were out followed by placing the new chips in carefully with the first socket empty. I've also put the new cf drive kit in and replaced the keyboard before reassembling the Amiga.

I turned the Amiga on and got nothing on screen. The power light is on the machine and the floppy light is on all the time static - when there's no disc in the drive, it doesn't make the usual clicking noises that an empty drive makes and if you put any discs in it doesn't start to read them.

I took the cf hard drive kit out and tried the Amiga again but the same happened. I've tried just taking the chips out and putting them back in but nothing still.

I've tried to put my original 3.0 chips back in and after I did, the same happened - nothing on screen, no drive clicking noises and static lights on the power and floppy led.

So as you can imagine I'm very gutted/worried. Has anyone ever came across this before? All the new components are from http://www.amigakit.com as far as I'm aware and previously I've only played games on it such as Frontier Elite which have been working fine.

Is it screwed?

[mradam83]

I did indeed - I made sure the dimples (for want of a better word) were installed the right way as per the instructions ie matching up to the same shape on the motherboard.

[mradam83]

I'm a bit worried in case the first time I put the chips either in the wrong sockets (as in u6a in u6b and u6b in u6a) or in the first hole the first time I installed them. I cant remember if I did but if so, would it permanently mess the motherboard up?

[mradam83]

Also, I have noticed a peculiar thing.

If I use the soft reboot (A, A and Ctrl) I notice the main power light dims as if it resets and then goes back to normal once released. I'm still having the same issues as regarding no picture, and sometimes I hear one solitary click from the disc drive the first time it's turned on but that's it.

[mradam83]

Eureka!

You lot are all very fine people - I've done what you all said, and it now works! It was a combo of my floppy being in wrong and the modulator being really old and falling out all of the time.

Thank you so much everybody!

I'm surprised the 3.1 roms has no insert disc screen like the 3.0 kickrom does, is that because the chip is a later one not made by Commodore after Amiga changed hands? It all works fine by loading discs etc and the hard drive works so I have no reason to think it's a problem with the chip as such.