Search found 5 matches

by verticalmammal
Mon Mar 01, 2021 12:01 pm
Forum: JLM Audio Kits
Topic: Stereo VU meter kit BUILD THREAD
Replies: 98
Views: 241082

Re: Stereo VU meter kit BUILD THREAD

Cool great to hear that got it working :-) Charity link below thanks. https://donateplanet.com/charities/read/carrie-s-beanies-4-brain-cancer/ Done and done. Super-impressed with how you honed right in on the issue with your troubleshooting steps. I had my suspicions about the caps on that side as ...
by verticalmammal
Wed Feb 24, 2021 3:21 pm
Forum: JLM Audio Kits
Topic: Stereo VU meter kit BUILD THREAD
Replies: 98
Views: 241082

Re: Stereo VU meter kit BUILD THREAD

OK the 10uF cap on that side should be blocking the dc so may have a solder short under it. Remove the 10uF and retest the +M- to check the DC is gone or not? With cap removed should be 6.2v on + side and 0v other - side of cap pads. Dude, you are a genius. I could see the solder bridge on the bott...
by verticalmammal
Wed Feb 24, 2021 2:45 pm
Forum: JLM Audio Kits
Topic: Stereo VU meter kit BUILD THREAD
Replies: 98
Views: 241082

Re: Stereo VU meter kit BUILD THREAD

Voltages are correct. Have you retried the pcb since cleaning it? Also first turn the trimpot back 25 turns encase you have one on full gain. With no meters connected measure volts across +M- on both sides and let me know what volts you read? Yes, unfortunately still no joy, same symptoms. Voltage ...
by verticalmammal
Wed Feb 24, 2021 1:22 pm
Forum: JLM Audio Kits
Topic: Stereo VU meter kit BUILD THREAD
Replies: 98
Views: 241082

Re: Stereo VU meter kit BUILD THREAD

OK nothing stand out except under the pcb is very hard to see problems as the pcb needs a good clean with an old toothbrush and isopropyl alcohol. Clean under the pcb and attach here a large clear well lit in focus photo of the pcb bottom. And also give a list of all voltages measured to 0v on the ...
by verticalmammal
Wed Feb 24, 2021 8:55 am
Forum: JLM Audio Kits
Topic: Stereo VU meter kit BUILD THREAD
Replies: 98
Views: 241082

Re: Stereo VU meter kit BUILD THREAD

Greetings! Just completed my VU meter kit and I must have done something wrong. The left channel works perfectly, but the meter on the right panel latches high immediately upon power-up. It doesn't seem to respond to adjusting the potentiometer in the back. When I remove power, the meter slowly fall...