Hi there- I read somewhere about taking precautions soldering direct on to the motherboard - I saw a safer method proposed on minuszero.net which suggests soldering to the old legs.. is that the approach you took for these trimmers? cheers! AndySorry I thought I updated this thread but I only mentioned briefly the new replacement I used in my other repair thread I opened for the whole board. See the first post:https://forum.vcfed.org/index.php?threads/breathing-new-life-into-1981-ibm-5150.1239263/
The pots I used were these 9-120Pf Sprague variable caps: https://www.ebay.com/itm/202908102783
Hi there- I read somewhere about taking precautions soldering direct on to the motherboard - I saw a safer method proposed on minuszero.net which suggests soldering to the old legs.. is that the approach you took for these trimmers? cheers! Andy
That was in regard to the filter capacitors on the motherboard, and I see on my website, "If possible, use the technique shown at here, because on a 5150 motherboard, soldering the ground and/or power lines on the PCB is problematic, and you could end up damaging the PCB.'' That sentence is targeted at those with nil or poor soldering skills. A competent solderer would ignore the suggestion, knowing how to deal with ground/power joints that are problematic. And even someone with little soldering experience may decide to go and do some internet research on the subject.I saw a safer method proposed on minuszero.net which suggests soldering to the old legs..