Aion vector delay no delay?

[ElectricDruid]

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?

The chassis is painted, so how are you getting a good connection? You'd maybe be better off connecting to one of the jacks or one of those empty GND pads on the footswitch PCB.

[Kee22]

Permanent i think more than 5min, latest measure 0,15 volts?

[Kee22]

Seems to be normal same reading when the power supply is not connected.

[Marcos - Munky]

Since you're using metallic jacks, connect the black probe to them. If you have an alligator clip, you can attach it to the part of the jack that's outside ou the enclosure.

A permanent voltage reading shouldn't happen. If you have a new battery, replace your meter's one. It's pretty common for them to give wrong readings caused by low battery even before they indicates the battery is low.

Also, can you get a photo of the other side of the board?

[Kee22]

Same thing on the jacks my multimeter is brand new and dont use battery power. Ive attached a picture of the back.

[Marcos - Munky]

Your soldering is nice, and I can't see a solder bridge on the regulator pins. I'd just suggest you to add a bit more solder to that "out wire". And I don't know if you have something between the middle pot metal part and the board, it's nice to add a piece of plastic or even cardboard between them to avoid shortings. But anyway.

Regulator pin1 8,68v pin2 0v pin3 8,07v
PT2399 pin1 8,06 volt
TL072 pin8 8,68 v

Those voltage measurements shows some things are "correct" but under wrong values. I don't know which pins of the regulator you called 1 or 3, but one of them should be at the same voltage as pin8 of the TL072 (8.68V, check) and the other one should be at the same voltage as pin1 of the PT2399 (in this case, your pin3 have the same voltage as pin1 of the PT).

The thing is this voltage is totally off, it should be 5V. So there's something wrong with the regulator part. Before we say the regulator is bad, check what's written on it.

[Kee22]

Thanks, the regulator is a 78L05 and it´s not regulating the voltage. I have 8,7 volts in and 8 volts out and 0 at gnd. So this might be a problem the only thing thats strange is that it kind of worked in the beginning and the volts where down to around 5,8 out and the hiss noise was gone but still no delay effect?

[ElectricDruid]

Thanks, the regulator is a 78L05 and it´s not regulating the voltage. I have 8,7 volts in and 8 volts out and 0 at gnd. So this might be a problem the only thing thats strange is that it kind of worked in the beginning and the volts where down to around 5,8 out and the hiss noise was gone but still no delay effect?

5.8V still isn't close enough to be considered "working". Typical output voltage tolerance is +/-5%, or 0.25V for the 5V regulator. And that's across the whole temperature range, so at normal room temperature, you'd usually expect it to be closer still.
There was something wrong initially, and perhaps it fried the regulator and got us to where we are now.

I agree with Marcos - since you've got the right part in place, the part must be bad. I'd try replacing the regulator and re-checking the 5V supply. Don't put any chips back in until the supplies are solid.

[PRR]

... my multimeter is brand new and dont use battery power. ....

Brand/model?

[Marcos - Munky]

So, you got the correct regulator (78L05). As pointed by Tom, the output voltage should be very close to 5V. So the first thing is to replace it.

You don't really need to remove the TL072 when you test the regulator, because the power supply for the TL072 is taken before the current reaches the voltage regulator and is indeed correct from your measurements, but be sure to take out the PT2399 to avoid burning it by overvoltage - if that didn't already happened, but let's assume it didn't. It's better to be safe than sorry, so if you think it's better to remove both ICs, then do it.

For the regulator, there are two models. The 78L05, which is the one you have, and the 7805 (without the L), which is a bit bigger and with a metal tab so you can attach it to a heatsink if needed (this one can handle a bigger current when compared with his smaller brother). Both will work, but if for some reason you get the bigger version, be sure to rotate it 180º when putting it back into the circuit. They have different pinouts.

[antonis]

First picture calls for a 78L05 (TO92), Marcos.. 

[Marcos - Munky]

Yep. I said about the 7805 (TO220) in case Kee22 order it online and finds out he got a "different one" than the TO92 version.

[Kee22]

Thanks guys Ive order new parts hopefully it will work when i can replace them.

PT2399 DIP-16 Digital echo processor
78L05 TO-92 5V 0.1A
L7805ABV TO-220 5V 1A
TL072CP DIP-8 dual op-amp
NJM072D DIP-8 dual op-amp

Thanks for now i´ll get back to you when my parts arrive.

Peace 

[DIY Bass]

While you have the regulator out take some resistance measurements, particularly between the gnd and output pads for the regulator.  If there is some kind of short going on there then you may have too much current through the regulator and that could fry it.  May as well check it while everything is out. 

[Kee22]

Ok, starting to give up now  . Replaced both ic´s PT2399 and TL072 and the reg 78L05 have a steady 5v in the pedal is nice and quiet but NO delay? Rechecked my wiring cant find any mistakes. Qlueless ......

[duck_arse]

you know the drill - remeasure all the voltages, and then post them here.

[Marcos - Munky]

Ok, starting to give up now  . Replaced both ic´s PT2399 and TL072 and the reg 78L05 have a steady 5v in the pedal is nice and quiet but NO delay? Rechecked my wiring cant find any mistakes. Qlueless ......

You solved one problem. But that doesn't mean there wasn't other ones

As Duck said, remeasure voltages. Also, does the clean "no delay" guitar sound is coming out when the pedal is engaged?

[ElectricDruid]

Ok, starting to give up now  . Replaced both ic´s PT2399 and TL072 and the reg 78L05 have a steady 5v in the pedal is nice and quiet but NO delay? Rechecked my wiring cant find any mistakes. Qlueless ......

You solved one problem. But that doesn't mean there wasn't other ones

As Duck said, remeasure voltages. Also, does the clean "no delay" guitar sound is coming out when the pedal is engaged?

I agree with Marcos (again!). I think getting the 5V power working correctly is definitely progress, so that's good and a step forward. Well done.

Now you've got the PT2399 running safely, we can find out where that delay signal has lost. Don't despair - the process takes time, but it works. Just keep taking the next step.

[Kee22]

Thanks guys ! Ok here goes

PT2399
Pin1  4,98v
Pin2  2,49v
Pin3  0v
Pin4  0v
Pin5  2,96v
Pin6  2,49v
Pin7  4,59v
Pin8  4,59v
Pin9  4,79v
Pin10  0,54v
Pin11 0,54v
Pin12  4,73v
Pin13  3,15v
Pin14  0,03v
Pin15  4,97v
Pin16  0v

TL072
Pin1  3,95v
Pin2  3,95v
Pin3  3,95v
Pin4  0v
Pin5  3,95v
Pin6  3,95v
Pin7  3,95v
Pin8  7,9v

78L05
In 7,9v
Gnd 0v
Out 4,98v

I've checked the wiring and cant find anything wrong maybe Ive put some component in the wrong place? Suggestions?

[Marcos - Munky]

Do you know how to do an audio probe?