diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Pass Labs (http://www.diyaudio.com/forums/pass-labs/)
-   -   Strange behavior of my Threshold SL10 (http://www.diyaudio.com/forums/pass-labs/212220-strange-behavior-my-threshold-sl10.html)

PKI 6th May 2012 05:21 PM

Strange behavior of my Threshold SL10
 
Is it ok that even if I plug only one input R or L you still have a sound from both channel on output? Does the ore go to mono mode if only there is only one input? Thanks!

Zen Mod 6th May 2012 10:38 PM

nope

that's not ok

PKI 6th May 2012 11:11 PM

Thanks! But when I plug two channels and use balance signal goes from one channel to another. Any idea for further tests to find a problem? Can it be because of some old pots/switch?

Zen Mod 6th May 2012 11:31 PM

pics , please

GaryB 7th May 2012 02:32 AM

Quote:

Originally Posted by PKI (Post 3014224)
Any idea for further tests to find a problem? Can it be because of some old pots/switch?

I'd check the cables you're using as well. If one of them has a problem with the ground connection then you might find signal appearing in funny places as it tries to close the signal loop.

---Gary

PKI 8th May 2012 04:10 PM

3 Attachment(s)
Here are some photos(sorry for the quality, I will try to re take them).
I've double checked all the cables/connectors and external connections all good.

Zen Mod 8th May 2012 05:57 PM

everything looks OK , but it's hard to say from so grainy pictures ;

it's obviously recapped sometimes in the past ( Silmics aren't original caps , for sure )

probably mistake was made during re-assembling wires back to switches-connectors

try harder with pictures

PKI 8th May 2012 06:46 PM

I recapped it :-) So everything should be good there. I guess one thing was that I was having hard time assembling all these tiny rotary switches after I deoxited them. Do you thing you can shorten something in there so you have this "mono" problem while switching functions will be ok?

Zen Mod 8th May 2012 07:07 PM

well , something is obviously wrong

useful and easy procedure these days , while working on gadget, is to make plenty of digi pictures

it can save you later , if nothing else - time saving during assembly ( less thinking needed) can be substantial

dunno ... comparing your pictures with pictures of SL10 from Treshold broshures , it seems all wires on pcbs are in place , and I resume that you didn't desolder any of them
culprit can be either on switches or pots - take a good look for unintentional shorts

PKI 8th May 2012 07:11 PM

Thanks! I can try to solder in another attenuator. Will more resistance one decrease the gain (it is too much of it now. do not use more than two steps up)?


All times are GMT. The time now is 02:11 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio


Content Relevant URLs by vBSEO 3.3.2