just got mine up and running and it worked off the bat!
BUT
i wasnt getting anything from my minus led, didnt realise i needed to adjust the trimpot, went round and reflowed the led and transistor and now its gone crazy
it is outputting signal but its just erratic and turning the rate knob just cycles through insanity, i cant really think what i could have done!
is there a function of the lfo itself that makes it go crazy that maybe i have inadvertantly turned on
reading this thread makes me think maybe the dist? is it suppose to function normally at 12 oclock? when i was checking i was putting it to 7 o clock assuming that was âoffâ
if the waveform knob is set to max it goes to noise random mode. it could be that (edit I meant there could be something solder wise thats making it go to max???) but also maybe check the middle leg of the potentiometer of the rate knob if that pin isnât connected it may be going eratic also. maybe in the reflowing you managed to make a connection not too solid? never ending hey hahah!
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haha it is never ending! all part of the charm though
i reflowed everything again and still the same, cant believe it worked then it didnt!
ill make a video of what its doing in the morning and maybe it will click with someone whats happening
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Also turn the sample knob to fully anti clockwise.
In fact with Sample, Waveform, Dist all at fully anti clockwise it should be in a fairly normal setting 
⌠I had this too
And wave form switch in UP.
Rob
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video documentaion of my panicked LFO
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is your wave form switch selecting between banks, could be just playing the second bank.
It looks like itâs in the middle off position (ON-OFF-ON) which I think is like mine and should be ON-ON with the up position selecting a more normal bank??
Could be wrong thoughâŚ
rob
Looking at the schematic and the Data sheet,
WAVE SET 0-5V digital input
NC/+5V - Original wave set
0V - Alternate wave set
The schematic shows the switch tieing the pin to ground, or floating. depending on the switch position. So contrary to what I have said above if itâs in the Middle it should be floating and on the original wave set and if in the up position also floating⌠Only when the switch is at lower is it grounded for the alternative setâŚ
Worth a play though, maybe see if PIN 3 on the LFO is grounded.
Rob
My first reaction was âwhat the hell is an onion switch??â
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Maybe I missed it, but did you put the multiplier fully anti-clockwise?
ah no that was on full!
turned it down and it seemed much better, now even i turn up the multiplier it seems to be working, maybe there was something awry with the multiplier pot and its sorted itself out?
is this thing suppose to function evenly, so the plus and the minus are always polar opposites, im getting them flashing just one after another, cant work out how to get a simple sine wave modulation out of it
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The LEDs are connected to each side of an inverting amplifier, so when one is on the other is off (unless the output signal is low enough that theyâre both off).
Of course, if the LFO frequency is high enough you might not notice that oneâs off.
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The sine wave is the first wave in bank one. If that isnât swinging evenly with distortion in the middle position, you need to adjust the trimmer. And the fast rate thatâs possible is a feature. Itâs fast enough to produce audio on itâs own.
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its not about the evenness of the swinging thats wrong, its the inconsistency of the timing, they arent exactly opposite each other, maybe a problem with the tl074?
also the outputs dont cycle, they go from low to high and then repeat like a sawtooth, and i have the waveform pot fully anticlockwise and the bank switch up
. . . .
just as i typed the word sawtooth i thoughts id go investigate, sine wave is waveform 4! after the square wave
seems to be operating properly now! i was on sawtooth
Oops, I guess I should have checked that my memory was correct. I really thought sine was first 
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Itâs a device that needs mastering!!
I think mine is operating correctly. I now have both LEDâs againâŚ
Is it normal for the LEDâs to go out then the output jack is in?
Cheers
Rob
I honestly thought my unit was just an enigma
i should have checked tbh, turning something on for the first time when you dont really know what it does is like . . . . . is this a feature or a failure?
dont know what i would do without all you guys though
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these are based on what Sam likes / uses ! so what may seem like a bug may be a feature . but yeah that does make trouble shootin hard sometimes when you arenât sure if its doing what it should or not .
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I donât know if there is a reference video⌠what to expect?
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are they on and then as soon as you put a jack into a + or - output they go out?
the LEDâs are sensitive to the output attentuator so if you turn it down, the LEDâs go down with it, they show signal strength aswell as the signal itself
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