@plaes

121 Followers
377 Following
984 Posts
I break stuff. And file bug reports. Occasional retrocomputing.
Member of K-Space.ee hackerspace.
Websitehttps://plaes.org
Githubhttps://github.com/plaes
Show threadplaesDec 12
Last night I managed to delaminate existing FFC by using the same contact cleaner that was used to "fix" the power button. Then capton tape was used to keep the existing copper traces aligned.
As next, I'll try attaching small strips of copper tape to lengthen the existing traces...
#vintagecomputing #repairs #elektronika #mk52
Show threadplaesDec 11

While earching for correct pre-existing FFC from random websites is not really that fun, I decided to do something else..

This is a new plastic retainer part which should eventually help against the cable fatigue.

Model here: https://www.printables.com/model/1512008-elektronika-mk52-flexible-flat-cable-restrainer-re

#freecad #mk52 #vintagecomputing #3dprinting

Show threadplaesDec 10

Pitch, please!?
Excuse me?
For the new flexible flat cable (FFC)...

#vintagecomputing #mk52 #elektronika #madeinukraine #electronics #repair

Show threadplaesDec 10

When comparing two boards, one can spot that the upper board (I have circled the area as well) is missing the plastic strain relief for the board-to-board flexible flat cable.
Lack of strain relief allowed micro-cracks to form, add some moisture and we'll eventually end up with a delaminated flexible flat cable and broken solder joints.

#vintagecomputing #madeinukraine #elektronika #mk52

Show threadplaesDec 10
And picture from insides. Top one was not powering on and eventually figured out that the issue was broken power switch. After flooding it multiple times with contact cleaner I was greeted with working display!
But.. during the unit disassembly, disaster struck...
#vintagecomputing #elektronika #mk52 #madeinukraine
plaesDec 10
I now have two of them. Still missing the other 50 shades of grey.
#vintagecomputing #elektronika #mk52 #ukraine
Show threadplaesNov 22

Though, when doing things the "official" way, you just have to push the "Enable the service mode" button in computer.

I only had to do it the "hacky" way, because initially we were given the wrong rotor by the shop, so when I eventually got the correct parts it was faster to do the replacement myself. (This picture was taken more than one week earlier than the pictures in previous posts).
#carmaintenance #diy #hacks

Show threadplaesNov 22
On the wheel side, motor has just a positive/negative pins which you hook up to ta 12V power supply. Connecting wires one way will engage and the other way it will disengage the electric parking brake.
#volvo #carmaintenance #hacks #diy
Show threadplaesNov 22
Our car has electric parking brake which is automatically engaged when stopping the engine. Official service manual mentions that you'll need to use the "diagnostics" tool to disengage the brake and this is what most mechanics use as it's actually faster in case you are already servicing the machine.
But it's also possible to do it without by using a 12V power supply (in my case I just used the bench PSU)...
#carmaintenance #hacks #diy #diagnostics
plaesNov 20
Look what I found...