emulatorII-list

Thanks for your expertise, but yes, I attacked all the chips. I must have mis-interpreted in my haste and excitement. And I just reseated all of them, making sure the polarities were correct and the pins were not bent. No luck still. I'm hoping it is just the EPROM. I think I'll try and get someone to make me one from (what I'm hoping will be compatible) the binaries in the files section. The main is a 2.1 and the scanner is an EII+ 3.0. Then I'm assuming I can try to replace the Z80 since its common. If it still does not work I'll take it to a full blown tech.

I'll check the Power supply cables. And yes, I did it all last night so its bone dry.

If you have any tips on finding someone to write an EPROM or anything please do share, thanks again :)

--- In emulatorII-list@yahoogroups.com, "rob@..." <rob@...> wrote:
>
> Hi
> The recommendation to clean IC contacts is well off base. It is far 
> better to try and diagnose the problem than attack all the chips. Did 
> you take some/all the chips out to clean the pins? Possibly bent a pin 
> or a chip the wrong way round? What was the original problem? As it will 
> still be there...
> 
> Your EII is failing to boot from main EPROM. I would suggest starting 
> with the power supply, is it providing all the correct voltages, are 
> they present on the motherboard? Check the CPU and EPROM chips are 
> correctly seated the right way round. Is the PCB dry and the alcohol 
> gone, no shorts? Its very easy to disturb the power supply cabling 
> especially on the power suppy. Be very careful as mains voltage will be 
> live inside the EII. If in doubt find a good synth tech to do a repair.
> 
> Please be careful there are 7000 dollars of electronics in an EII, its 
> one of the most complex electronic instruments ever made (except for an 
> EIII)
> 
> Best Regards
> Rob
> www.emulatorarchive.com
> 
> 
> 
> On 14/02/2011 21:52, xxxdavidmaysxxx wrote:
> >
> > I'm sorry for sounding noobish, but I truly am. I really need help and 
> > I'm deeply upset over my EII. I got it yesterday, it exibited some 
> > problems so after reading some forums telling me to crub all the IC 
> > contacts with alchohol I did. Now it doesn't do anything. When you 
> > turn it on, all the leds come on, the display has all black boxes in 
> > the first half of the screen and the disk drives don't do anything. 
> > Its obviously an issue with the main CPU or EPROMs I'm guessing, but 
> > what do you all think? Have I completely ruined it?!?
> >
> >
>