On 31/10/2016 22:22, "Peter Coghlan" <cct...@beyondthepale.ie> wrote:
>> >> Before I replaced the failed potentiometer (new one seen top left) the >> display looked like its horizonal hold had gone so I reasoned that's what >> the pot controlled. I can *nearly* get a steady picture but the brightness >> is out as well, despite there being working pots for that and contrast. The >> brightness seemed more constant before I replaced the radial cap with the >> PET one which is why I wondered if the choice was wrong. >> > > Did you measure the resistance of the track on the old potentiometer > and use something with a similar value for the replacement? > > Is it possible that you misread or misinterpreted the value of the capacitor > that you replaced? You could try putting the old one back and seeing if there > is an improvement. It says 10K on what's left of the wiper, there's a pic in an earlier message from tonight :) I can't put it back because it's physically rotted unfortunately. > What is PET in this context? I am assuming it is nothing to do with Commodore. PET as in the plastic housing, PET Film cap. I figured my replacement must be OK since there was one other on the board in that style already. > Can you take a photograph of what you are seeing on the screen? Once I've put it all back together, yes. Might be difficult to capture with a camera though but I'll have a go. Cheers! -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?
