Need Help With Swapping Over Eproms In A Keyboard.

[markopolo]

Hello chaps. Just wondering if there is anyone in the Dorset area that might be able to help me swap over an EPROM from one keyboard to another. My old keyboard blew up and I bought a new one.

The chap who sold it to me didn't tell me it had an old version of the OS (Operating System)  I need, which means I bought a Lemon. I did ask him twice. My fault for being so trusting.

I am hoping that the EPROM in my old keyboard that blew up is still intact. I don't know if it was the Transformer or the PSU that blew, but something smelt funny ; . I have been told by a couple of people that it SHOULD be ok. Suck it and see I guess.

So...I need someone with a special tool to extract the EPROM from one keyboard and insert it into the other. It needs some kind of grounding device apparently in case of static which can wipe the chip.

I have been told not to do it myself as using a screwdriver will almost certainly bend the pins.

I have also been told it should only take about 30 seconds to do. 

Is there someone in the West Dorset area that would be able to do this kind of thing?

I would pay the going rate of course ; .

Thanks for reading.

 

[Barx]

What kind of package is the chip. If it is DIP then extraction tools are relatively cheap and so too are earth strap (Although I personally never use them).

I usually us a set of these tweezers for such tasks. Just be careful.

http://www.maplin.co.uk/ic-extraction-tool-2555

Also either make a note or take a photo of the direction of the chip. there should be a little dot to indicate pin 1. Make sure this is the same way round.

if your still unsure, take a photo and post it on here.

 

[markopolo]

Thanks for the advice. 

That tool looks like it might be a cheaper option than paying someone to come here for a 30 second job. 

I was wondering what the bloke was talking about with it having a grounding appliance attached to the tool.

I guess he just meant wear a wrist strap and earth yourself before diving in. I'm not in the habit of running and skidding round

on my shagpile carpet in my Nylon socks and then installing/uninstalling ICs ; .

Sorry, I don't know what you mean by DIP and package. Here is a similar one to what I am talking about:

http://blogs.dion.ne.jp/dub_stylee/archives/5843137.html

First picture. Does that answer your question?

I will open up mine and take a photo and post it here just to double check.

Thanks a lot for your input, I appreciate it ; .

 

[ProDave]

That's a plug in chip on a plug in board so should be easy.

Why not try it yourself?

 

[Barx]

That IS a DIP package. The package is the shape / pin style. DIP = Dual In-line package. Fairly easy to remove IF a socket is used. Note: these chips can be soldered direct to pcb but by the sounds of the advice you have already received, it will be in a socket.

 

[markopolo]

Yeah I think I will give it a go. I build computers so I'm not totally new to this. I think I'll grab that tool from Maplins though, it's only a couple of quid and might make it a bit easier. I'll earth myself of course. Some RAM I've put in to Computers almost needed a hammer and chisel, so I don't think it will be too hard if I take my time.

I'll check when I open the case that it is the same as the one I posted just to be sure, but they were pretty standard things really.

Thanks again for all your advice.

Nice one!

 

[Barx]

you just need to make yourself the same potential as the device, touch a metal part of it like the chassis if it has such a thing. Then simply dont go carpet shuffling.

 

[markopolo]

That IS a DIP package. The package is the shape / pin style. DIP = Dual In-line package. Fairly easy to remove IF a socket is used. Note: these chips can be soldered direct to pcb but by the sounds of the advice you have already received, it will be in a socket.

I see, that makes sense. Don't think any soldering is involved with this component. Unlike the battery which was a right ****** to fit, unless you were lucky and got the 'pull-in-pull-out' one which was a breeze.

I'm going to double check before I mess about with anything and post a picture just to be sure, unless it looks exactly like the one I posted and you have told me about. All in all, good news I suppose. Now, just hope the little chap didn't get fried along with the rest.

I asked some advice and the keyboard people said it was not so straightforward to tell whether it was the PSU or the Transformer - it's an American keyboard. They sold both, coming in at around 50 quid each, and with the p&p from the states it was cheaper to buy both at once, in case. Like I said, the few people I have talked to reckon the EPROM should be ok. Fingers crossed.

Thanks again, I'll let you know how I get on!

 

[markopolo]

you just need to make yourself the same potential as the device, touch a metal part of it like the chassis if it has such a thing. Then simply dont go carpet shuffling.

Yeah, that's what I do when I build a computer, never used a wrist strap yet. Lots of others do the same. As for the carpet shuffling, eh eh, I was just kidding. I don't own a carpet. I'm so poor I don't even own any socks. Just kidding 'bout the socks.

Ah happy memories of me and my little brother building up a good charge and zapping each other in the back of the ear in our Nylon jim-jams. Those things were DANGEROUS!  eh eh.

Take care fellas.