IBM M Repair centre :-) 3 x SSK

[idollar]

Hello,

I am working on this at the minute:

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They are not mine. It is a favor to a new/old DT member.
Do not worry hammelgammler, I will not mention your nickname

i$

[HzFaq]

I have that same screwdriver set, the bits keep disappearing into the handle...

Also, as with nearly everyone else on this site, you work much tidier than me .

Can't wait to see the final results.

[Khers]

Looks neat i$! Just wonder what the spoon is for

[idollar]

Looks neat i$! Just wonder what the spoon is for

It is my key puller

[Khers]

Never seen that before! Do you prefer it for IBMs as compared to a wire puller?

[idollar]

Rivets are off
Holes are in

Now they deserve a bath, don't they ?

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[idollar]

I climbed to the roof of my house to ensure that they dry out properly ...

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[idollar]

Well, I did not really

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[ramnes]

I would have removed the inserts for the stabilizers before doing the bath. Aren't they a bit lubricated?

[hammelgammler]

Well... To my defense their not only mine either... Only two of them.
Thank you very much for your help with them! Looks very organized and well planned.

[idollar]

I would have removed the inserts for the stabilizers before doing the bath. Aren't they a bit lubricated?

I never noticed any lubrication on the inserts, but it is a good idea. Next time.

@hammelgammler : feel free to ask for your money back for a bad done work

[idollar]

Croatia, Rome, Black Forest, London

This time the Austrians were only supporting with the tools

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[idollar]

Time to screw ...

One of the most frustrating things with a bolt/screw mod is to complete the mod, place the caps back, and realise that they moved during the process. I found a procedure that normally works.

I start on the bottom of the board and WITHOUT FORCING THE BARRELS PLATE I keep on screwing up. When the board is back fixed with the forced bending, I screw the corners. This fixes all the flippers in place without needing to move the sandwich at all.

A picture is worth thousand words:

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And there without the painting:

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After this first phase, one can screw the remaining screws.

It is important NOT TO TIGHT THEM a lot. Actually I screw them until the end and then I UNDO ONE TURN.
Tightening too much will make the sandwich too rigid. Some keys may not work.

[idollar]

Do not forget to clean the contacts. A pencil rubber pencil will do the trick. Careful with bending the matrix !

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@hammelgammler - One of the under-keys was broken (or I broke it without noticing). We are very lucky as it was the control key. Other keys are one piece only. In an SSK with these special keylegends it could have been a disaster. It was not the case, anyhow. Everything is back nominal using one of the spares that you sent to me.
Note: It is the first time that I see one of these breaking.

[idollar]

I've got you under my skin ...

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[idollar]

We are getting there !!!

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[andrewjoy]

@hammelgammler - One of the under-keys was broken (or I broke it without noticing). We are very lucky as it was the control key. Other keys are one piece only. In an SSK with these special keylegends

One part SSK caps exist ? Man i need that !

[idollar]

We are done.
Testing is missing.

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[idollar]

Two in one - on popular demand

@hammelgammler - One of the under-keys was broken (or I broke it without noticing). We are very lucky as it was the control key. Other keys are one piece only. In an SSK with these special keylegends

One part SSK caps exist ? Man i need that !

Looks neat i$! Just wonder what the spoon is for

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The spoon works better when you are undoing all the keycaps. I normally do not use it in other cases

[idollar]

Typing with the first keyboard that seems to work.
I have tested all the keys using xed.

The tight control seems to be a little bit softer than the other keys, but I let hammelgammler check it thoroughly and adjust the pressure of the screws as needed.

Lets move to the second one.

BTW - Yes, T and R were swapped. I correct it.

The birthday of this one is 24NOV87

[andrewjoy]

the caps look amazing! the printing on the embedded number pad looks darker than my 1990 SSK, but one part caps is the dream.

[idollar]

I am now typing with the second keyboard that seems to be working nicely also.

In this case i have noticed nothing rare.

The birthday of this one is: 11SEP87

[idollar]

ok, i am typing with the third keyboard.
none of the shifts works. let me try with the same board but a different controller. i do not want to undo all these screws to then find out that the controller did not work properly

the birthday of this one is 22nov87

[idollar]

It seems that the membrane is broken.
Do not worry, it can be repaired and in the worst case scenario, I have a spare.

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[idollar]

It may not be the membrane. They keys that are failing are not in the same row (Bothe Controls and SHIFTS)

[idollar]

A different controller has the same problem
Time to remove this screws

[idollar]

The membrane is broken.

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Lets repair it

[idollar]

We first scratch the TOP surface. It is thinner than the bottom side.

To then apply the conductive paint

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that shall dry out before it gets conductive.

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hammelgammler: this was not in our deal It was just the screw mod
Do not worry, I will just charge you double ( 0 x 2 = 0 )

UPS .... what a typo

[hammelgammler]

Yeah we can talk about that. I really don't know if the membrane was broken before, I normally tested every board after cleaned them. :/

Sorry that you have more work then necessary.

Edit: At least there are high quality pictures of how to repair a broken membrane...

[idollar]

There is nothing to talk about ... I know where you live

I will charge you double (what a typo in my previous post. I cannot multiply !)

It is working. I just have to post some pictures on how it was tested and mount it back