BillBee Posted February 10, 2017 Share Posted February 10, 2017 Quick question for anyone familiar with the model knobs on a Variax 500. I took on a project V500 and it is all repaired to functionality and sounds awesome. However one nagging detail is flipping my OCD - the Model Knob and the spring detent ring. The spring ring has the two tabs that come up and allow for contact with the inside of the knob so you can feel a wee bump on each model selection (and have it stop). Well the original spring ring had its tabs bent inwards so no contact was being made and I bent them outwards which yes they make contact. The rub is the tabs make contact with the protruding piece (small block) on the inside of the model knob which as you may guess stops everything. It was late at night and it was like working on a Chinese puzzle box. :) Being at work and unable to get my hands on it to finish the job I have been thinking of the "why": The model knob is the same as the replacement V500 one on Fullcompass and the model indicator ring and spring ring are placed with the locating tabs in the pot's shaft slot. Is this a matter of not having the model knob not being pushed fully down? (IE: take off the cavity cover and see if the pot's shaft can be forced up a few more threads). Wrong knob? Any pointers would be appreciated. :) -Bill Check out the attached for a clarifying pic. Quote Link to comment Share on other sites More sharing options...
eenymason Posted February 11, 2017 Share Posted February 11, 2017 Two points... Make sure you know where the selector position is when you pull it off. When dismembering - ah I mean disassembling mine for any inside work, I choose Custom position 1, so I can be sure to put it back in the right position. Initially, I was unaware of this dilemma, until realising that the model I was hearing wasn't the model I was reading on the dial. Trial and error figured out where it was supposed to be..... It definitely needs to be pressed firmly down - don't break it though! It may simply be that the black plastic extension which enables it to stop at Custom 1 or Custom 2, is hitting the part on the PCB which is meant to stop it from turning, thus stopping it from going all the way home on the shaft. Look after point 1, and point 2 shouldn't occur. 1 Quote Link to comment Share on other sites More sharing options...
BillBee Posted February 13, 2017 Author Share Posted February 13, 2017 Thanks my man, I wedged it back after rebending the spring tabs and its in a workable position. Not great but usable. I will keep the tips in mind if I have to reopen it. -Bill Quote Link to comment Share on other sites More sharing options...
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