Aion vector delay no delay?

[Kee22]

Hi
Need some help to get my Vector working this is my fourth pedal but the first one that doesnt work. Did some readings as follow.

Volt in 8,9
Volt reg 7,68 - 6,0

PT2399
1 6,07
2 3,01
3 0
4 0
5 3,68
6 3,02
7 0,82
8 0,83
9 2,94
10 1,82
11 2,72
12 2,76
13 2.31
14 2.19
15 6,08
16 0

TL072
1 3,84
2 3,84
3 3,84
4 0
5 7,70
6 2,1
7 3,85
8 3,69

Ive checked everything for shorts cant find anything. The delay is totally dead and there are hissing noise from the delay and mix pots. Can someone point me in the right direction?

Regards

[ElectricDruid]

Check the 5V power. You've got 6V going to the PT2399, and the datasheet gives 5.5V as the maximum supply, so that's not good.

[Kee22]

Hi
Got the voltage down to 5,7 volts all the noise is gone but the delay effect is dead silent? Output pin is reading 0 on the PT2399 when guitar signal goes thru, suggestions?

Regards

[Marcos - Munky]

Why you had 6V at the output of the 5V regulator, and how you got it down to 5.7V? You should have 5V at that point.

[Ben N]

Once you get the supply voltage sorted, try your backup PT2399. You do have a backup PT2399, right? 

[Kee22]

No unfortunately i dont have an extra PT2399 chip, Ive changed the voltregulator thats why I got a voltage drop. Suggestions?

[spoontex]

Try another PT2399, there a lot of fake chips out there...

[Kee22]

This one came with the Aion kit from MusikDing so I hope its ok but Ill try to get a hold on a new chip.

[duck_arse]

it is always polite to welcome a first-time poster, so welcome to the forum.

it is also polite to post, at the very least, a link to the documentation for your build, and the correct version docs at that.

another thing - when you measure the voltages on the regulator, post them all, including the numbers for the ground leg. in fact, any time you measure a ground anywhere in circuit, the number is important.

and - I'd guess you have a short somewhere between pin 1 and pin 15. power off, remove the ICs and measure the resistance between those two pins, please.

[Kee22]

Link to
https://aionelectronics.com/wp-content/uploads/2019/03/vector_documentation.pdf

Somethings strange with the power regulator it shows 8,5 volt in ground 0 and 7,95 volts out and I have 7,95 volts in on pin 1 on the PT2399 chip. Measured resistance on PT2399 chip between pin 1 and 15 says 93k ohm. I'm a newbie regarding electronics and just been building pedals from kits so my knowledge regarding troubleshooting aren't the best.

Regards

[duck_arse]

I think you might have your pin numbers confused. so, with the PT2399 and the TL072 out of their sockets, power on and measure the voltages on the regulator, and the pin 1 on the PT2399 and pin 8 on the TL072.

[Kee22]

Ok
Regulator pin1 8,68v pin2 0v pin3 8,07v

PT2399 pin1 8,06 volt

TL072 pin8 8,68 v

Hope this helps

[antonis]

Regulator pin1 8,68v pin2 0v pin3 8,07v

Flip 180^o your regulator..
(I know it's correctly oriented but there are some versions with reversed IN-OUT)

[Kee22]

Already tried that one Im afraid................

[ElectricDruid]

it is always polite to welcome a first-time poster, so welcome to the forum.

My apologies! I didn't notice that! Welcome, indeed.

Regulator pin1 8,68v pin2 0v pin3 8,07v

This is very bad. There's no way that's supposed to happen. Could there be a short somewhere between the pins, or between one of the pins and a track connected to the other or something?

We definitely need to get this +5V power supply sorted out and solid before you try putting any chips anywhere near it. Otherwise you're toasting stuff to no purpose!

[antonis]

Maybe regulator pins are not firmly fit into respective socket..

[PRR]

Maybe regulator pins are not firmly fit into respective socket..

Which one? If IN is broke, all else must be zero. If OUT is broke, we can't have over-voltage on the PT chip. If GND is broke, GND pin will sit much higher than zero.

(We may have to clarify if measurements are at pin, socket, board, or....)

[Marcos - Munky]

It may seems to be an stupid question, but... how you're measuring the voltages? Where are you putting the probes? And is your meter set to DC voltage and not AC?

Well, it ended up being questionS and not one question but anyway. Don't take me wrong on this comment, I just want to be sure you're doing it correctly. We all sometimes do all kinds of mistake, some are so "stupid" you won't believe if we tell you

Also, last (and late) but not least, welcome!

[Kee22]

Hi
My multimeter is set to dc voltage, measure with red probe and the black is firmly attached to my chassi. Something is very strange I´ve removed the regulator completely and i still get a 0.12v reading on the outputsocket and on pin 1 on the PT2399?
Is this normal?

Regards

[antonis]

Do you get permanent 120mV reading or just instantly..??
(the later could be due to C22 charge..)