Search found 8 matches

by Ekz
Fri May 08, 2020 2:04 pm
Forum: JLM Audio Kits
Topic: Stereo VU meter kit BUILD THREAD
Replies: 55
Views: 64592

Re: Stereo VU meter kit BUILD THREAD

Joe Malone wrote:
Fri May 08, 2020 12:54 pm
Yes they are backwards. Just reverse the red and black wires and make sure you have RLamp resistors 680R fitted and it should work.
Wow, alright thanks. I copied what was in the photos and what was on the previous circuit exactly. Glad that's sorted out. Sorry for being really new at this.
by Ekz
Fri May 08, 2020 12:50 pm
Forum: JLM Audio Kits
Topic: Stereo VU meter kit BUILD THREAD
Replies: 55
Views: 64592

Re: Stereo VU meter kit BUILD THREAD

Here are the photos from the LED's I put in. Hopefully you're able to see. Both polarity should be correct.
by Ekz
Fri May 08, 2020 12:05 pm
Forum: JLM Audio Kits
Topic: Stereo VU meter kit BUILD THREAD
Replies: 55
Views: 64592

Re: Stereo VU meter kit BUILD THREAD

Ok do you understand that the leds need to be the correct polarity to work. So +L goes to long leg of first led then short leg of that led links to the long leg of the next led. Then the last short leg no used goes to -L. If one or both leds are backwards they will not light up. I'm sure I got the ...
by Ekz
Thu May 07, 2020 11:11 pm
Forum: JLM Audio Kits
Topic: Stereo VU meter kit BUILD THREAD
Replies: 55
Views: 64592

Re: Stereo VU meter kit BUILD THREAD

I've since rebuilt the VU buffer kit, and replace the LED's in the VU meter. The VU meter works fine and has been calibrated, but the LED's don't work, even after desoldering and replacing the burnt ones with new 5mm white LED's.

I don't know how to troubleshoot from here. Please advise.
by Ekz
Tue Apr 28, 2020 5:50 pm
Forum: JLM Audio Kits
Topic: Stereo VU meter kit BUILD THREAD
Replies: 55
Views: 64592

Re: Stereo VU meter kit BUILD THREAD

All that should be needed is to change the 10R to the correct Rload of 680R and replace the 2 x white high bright 5mm led in each meters backlight box by unscrewing the 2 small philip head screws. If you remove the 2 x Rlamp 10R for now you can test and align the meters without the backlights. The ...
by Ekz
Tue Apr 28, 2020 4:17 pm
Forum: JLM Audio Kits
Topic: Stereo VU meter kit BUILD THREAD
Replies: 55
Views: 64592

Re: Stereo VU meter kit BUILD THREAD

Your dropbox is not offering me the download button. It want me to sign in and I do not have a dropbox account. Are you not able to add the photos as attachments to your post? Hopefully this upload works. I just realised that there are 2 images of the PCB, and I think I was going by the older one. ...
by Ekz
Mon Apr 27, 2020 1:15 am
Forum: JLM Audio Kits
Topic: Stereo VU meter kit BUILD THREAD
Replies: 55
Views: 64592

Re: Stereo VU meter kit BUILD THREAD

I am not entirely sure what I did wrong, but when I turned the VU meter on, smoke started coming out of the unit. I found out that the bottom right resistor is burned. I checked my solder. They are all fine. Please advise how can I fix this, if it can at all. https://www.dropbox.com/h?preview=IMG_20...
by Ekz
Tue Apr 21, 2020 9:58 pm
Forum: JLM Audio Kits
Topic: Stereo VU meter kit BUILD THREAD
Replies: 55
Views: 64592

Re: Stereo VU meter kit BUILD THREAD

Hi, I'm pretty new to electronics and soldering PCB's. My only experience in soldering is wires on MMCX/2-pin connectors. My question is, is it possible to swap out the TRS connectors for male XLR connectors on the current PCB to create a XLR only input/output? Or given my skill level, is it easier ...