Keyboard to pcb wires pulled out by accident, oops

[Ramshorn]

Eek help please i recently acquired a ql and with no keys working I have taken apart to inspect the membrane which I have discovered is cracked along the crease on one of the ribbons, problem is the collection of 6 or so wires which attach to a small black plug on the main board have detached from their little black plug (my fault trying to unplug it) and I didn't take note as to which order they were in, think there is a red,white,grey and a few black wires, any help appreciated, thanks.

[1024MAK]

Mark

[Dave]

Code: Select all

Pin Wire Colour	Function
1	Black	MDV2 (red)
2	Grey 
3	Black	MDV1 (red)
4	White
5	Black	POWER (yellow)
6	Red

[RWAP]

A keyboard membrane is easy to replace -

http://www.sellmyretro.com/offer/detail ... brane-2340

Just a note about the wires - it does not matter about the order of the black wires - they are all common ground, so can be in any order - is it the red, white and grey leads which need to be in the right order

[vanpeebles]

Welcome to the forum!

[Ramshorn]

Superb advice and pictures thanks very much, seems I haven't destroyed it after all phew, sorry for being a noob but what's the best way to reattach the wires, does the black plug detach from board or do I just push the wires back in to it ? Thanks

[RWAP]

The black plug lifts upwards (grab the two ends and lift it up - it does not come clear of the motherboard), insert the wires and then push it back down to clamp the ends of the wires.

Be patient - 9 times out of 10, one of the wires will still be loose - give each a gentle tug to ensure they are held properly - otherwise, one will come out when you put the QL back together!

[Ramshorn]

Great advice again, many thanks for the quick response, very helpful forum

[schombi]

Just remember that pin 1 is not the top one; actually top to bottom is 6, 5, 4, 3, 2, 1. Guess who managed to mount the wires the wrong direction...