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 Forum index » DIY Hardware and Software » Klee sequencer
Difficulty Build
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logite



Joined: Dec 03, 2014
Posts: 3
Location: usa

PostPosted: Wed Dec 03, 2014 12:48 am    Post subject: Difficulty Build
Subject description: :) Uh oh, another
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Hi guys an introduction post

I'm going to be back with more info Smile I just wanted to see if there's any way to tell what sort of info I can provide-

A little backstory, I built my sequencer up and it works partially... but its functions don't exactly perform the way it would be considered logical to perform, some of them don't function in the way it's intended, and wanted to see if anyone would be willing to help me diagnose where I went wrong


I made exceptional care to take it slow in the event something like this would happen but it seems I have still made a misstep somehow- I don't want to take up anybody's time more than I should I just hoped if I asked ways to diagnose it if someone does come along that is kind enough to help a electronics newb than they could have an easier time than without...


I do know to start with I put one of the TL072s backwards by accident (you should've seen my eyes when it started smoking up.. I didn't know the proper orientation...I guessed hehe) and replaced it with a new chip in the right orientation, I'm not sure if that could have the possibility of damaging any other components

thanks..I'm looking forward to meeting and getting a chance to speak with you all Smile ..and to getting my really expensive $600 paperweight working with my system for the first time, too, of course Very Happy
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State Machine
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Joined: Apr 17, 2006
Posts: 2749
Location: New York
Audio files: 24

PostPosted: Yesterday, at 2:20 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi Logite

Thanks for posting. You're in the correct place to have someone help solve your problem so lets get started.

Firstly, even though you replaced the chip that was in backwards, our good common sense would tell us that the power supply may have been stressed. Where there is smoke, there is current and maybe too much. Start by measuring the positive and negative power supply voltages and let us know what they read. Just some friendly advice, guessing and electronics are not a good match. I mean this very respectfully sir. Always consult a data sheet to find out a components orientation rather than guess what it is. The build instructions are also quite clear in the parts placement.

Please tell us your symptoms to start the troubleshooting. What are you trying to do, what is happening verses what is supposed to happen. Please be as descriptive as you can.

Enjoy your holidays and hope to see your post. Smile

Bill
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logite



Joined: Dec 03, 2014
Posts: 3
Location: usa

PostPosted: Yesterday, at 3:14 pm    Post subject: Reply with quote  Mark this post and the followings unread

State Machine wrote:
Hi Logite

Thanks for posting. You're in the correct place to have someone help solve your problem so lets get started.

Firstly, even though you replaced the chip that was in backwards, our good common sense would tell us that the power supply may have been stressed. Where there is smoke, there is current and maybe too much. Start by measuring the positive and negative power supply voltages and let us know what they read. Just some friendly advice, guessing and electronics are not a good match. I mean this very respectfully sir. Always consult a data sheet to find out a components orientation rather than guess what it is. The build instructions are also quite clear in the parts placement.

Please tell us your symptoms to start the troubleshooting. What are you trying to do, what is happening verses what is supposed to happen. Please be as descriptive as you can.

Enjoy your holidays and hope to see your post. Smile

Bill


Hey Bill, very nice to meet you!! No offense taken at all- here I have some good news,

I worked with NV and his recommendation to check the Molex connectors was a right one because almost all of the cables but the 2 pin were completely bonkers in terms of continuity!! Now so as far as I can tell- everything but the Random on the Klee works great- here's the weirdness if you'd like to make any sense of it for a laugh Smile

It seems the PSU is okay, I was using a linear dual voltage one like the higher end ones to test it I think that might not be an issue with that? I am uncertain Smile

...Well I spent the past half hour trying to describe this in words but I don't want to take up this much of your time so I made the 1 minute video here instead, much easier Smile

https://www.youtube.com/watch?v=1TtAaeA5Yfo

I tried running a CV into the random level pot with a pos voltage lfo, it plays the pattern with the randomly but only one bit? is that how this is supposed to function if it is I'll be really embarassed Razz

Everything else works! Smile Smile Smile

Hope you enjoy yours too Smile

Wishing a working Klee for this Christmas, logite Laughing
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