Replaced LCD but no image appears

So a while back my lcd screen cracked (accident). i made due for a while until my gf talked me into replacing the lcd screen. i ordered the part from pentax and took a gillion screws out of the camera to get down to the screen mounts. turns out there are two connections between the screen and the camera, (1) a wire that has to be soldered (i guess this is a power supply) and (2) a ribbon cable that has to be clamped into place (i guess this is the video feed). so i took the old screen out, soldered the wire to the new screen and tried to get the ribbon cable in place. thats where i think the problem lies. i have the ribbon cable in, but i don't think all the way. i put the camera back together, power it on, screen turns on (i have power), but no image at all (before there was a messed up crystalized image). i can still take pictures, i just can't review them. any ideas? i think the ribbon cable is my issue, any tips on how to get it in the clamp? the close quarters really made this hard. thank you in advance.

Chris Gwinner Jul 27, 2007

i do remember unclamping the cable instead of just pulling it out. its been a while so i dont remember if its over or underneath? i guess its time open it up and try again.

2 Answers

Anonymous

Ok, having had the same problem as yourself, I can tell you that when looking at the lcd, the ribbon cable on the bottom left hand side stays flat and plugs into the light blue clamp (that is hinged and lifts up) the ribbon cables copper contacts face down onto the bed of copper contacts exposed when the blue clamp is opened. Hope this helps.

Posted on Sep 02, 2007

Greg Cann

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1,114 Answers

There are several different types of flex cable clamp arrangement. In some the clamp goes over the cable and others underneath, it is easy to forget which way the cable went! So check how the cable is seated and look carefully at the connector. Often if the cable goes over the clamp it will be grooved. Also when you removed the cable did you slide the clamp out or just pull the cable? It may be that the clamp is actually preventing the cable from being replaced. I use a pair of fine nosed tweezers to push on both ends of the clamp to release it. CAUTION! the clamps are very fragile and once broke virtually impossible to repair.

Posted on Jul 27, 2007

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