Weirdest Thing Ever

Started by kurtlives, December 19, 2007, 08:56:27 PM

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gez

There shouldn't be any need to, but for the moment short the original LED (if you can) with a croc-clip or something and take voltage measurements as described.  Report back with your readings.
"They always say there's nothing new under the sun.  I think that that's a big copout..."  Wayne Shorter

gez

Actually, if you've removed the original LED then you will have to rewire the switch (I was assuming you'd left it in).  You need to connect V+ to where the original LED's cathode was.
"They always say there's nothing new under the sun.  I think that that's a big copout..."  Wayne Shorter

kurtlives

How would I short the original LED wires? Then what would I measure?
My DIY site:
www.pdfelectronics.com

gez

Quote from: kurtlives on February 03, 2008, 01:14:49 PM
How would I short the original LED wires? Then what would I measure?

Please answer the following:

Have you left in the original LED?  Yes or no.

Do you own a multimeter?  Yes or no.

Re question 2:

If yes, and you're not familiar with taking voltage measurements, there's probably something in the FAQ section about how to do this. 

If yes and you are familiar with using one, read my previous post.

If no, then we're both wasting our time here.

The schematic isn't difficult.  Take your time, go through it and check that everything is wired as shown.  If you've left the original LED in place, then it should still work; unless the new LED has a ridiculously high threshold and even then you'd hear the effect when engaged.
"They always say there's nothing new under the sun.  I think that that's a big copout..."  Wayne Shorter

kurtlives

Quote from: gez on February 03, 2008, 01:51:18 PM
Quote from: kurtlives on February 03, 2008, 01:14:49 PM
How would I short the original LED wires? Then what would I measure?

Please answer the following:

Have you left in the original LED?  Yes or no.

Do you own a multimeter?  Yes or no.

Re question 2:

If yes, and you're not familiar with taking voltage measurements, there's probably something in the FAQ section about how to do this. 

If yes and you are familiar with using one, read my previous post.

If no, then we're both wasting our time here.

The schematic isn't difficult.  Take your time, go through it and check that everything is wired as shown.  If you've left the original LED in place, then it should still work; unless the new LED has a ridiculously high threshold and even then you'd hear the effect when engaged.
There is no original LED....just too wires that would be going to the LED.

I own a DMM..

I am sorry...I know I am hopeless
My DIY site:
www.pdfelectronics.com

gez

Quote from: kurtlives on February 03, 2008, 02:19:18 PM
There is no original LED....just too wires that would be going to the LED.


OK, now we're getting somewhere. 

Connect those two wires together (no need to solder for the moment) and try your bypass.  If you've left the switch as it was, then it should work now.
"They always say there's nothing new under the sun.  I think that that's a big copout..."  Wayne Shorter

kurtlives

Alright....I will report back in 30min.
My DIY site:
www.pdfelectronics.com

kurtlives

OK so....now the LED turns on and is at its normal brightness but I get no chorus or sound at all.
My DIY site:
www.pdfelectronics.com

gez

Quote from: kurtlives on February 03, 2008, 02:59:42 PM
OK so....now the LED turns on and is at its normal brightness but I get no chorus or sound at all.

Do you at least get the bypass signal (your post is ambiguous)?  Yes or no.

If no, then you've probably dislodged a wire leading to the output or input jack.  Troubleshoot with an audio probe if nothing looks obvious.

If yes, then you've probably wired up the modifications wrongly.
"They always say there's nothing new under the sun.  I think that that's a big copout..."  Wayne Shorter

kurtlives

When the effect is off I get my normal sound (amp sound), so the bypass is fine.

When the pedal is engaged the LED comes on but there is no sound what so ever. I can strum but nothing comes out of my amp.
My DIY site:
www.pdfelectronics.com

gez

Quote from: kurtlives on February 03, 2008, 04:38:32 PMWhen the pedal is engaged the LED comes on but there is no sound what so ever. I can strum but nothing comes out of my amp.

Then you've wired up something wrongly. 

Connect the -ve probe of your DMM to the -ve connection where it joins the circuit board, and the +ve probe to the +ve connection where it joins the board.  Test that you have power to the board when the effect is engaged (should read 9V).  Report back.
"They always say there's nothing new under the sun.  I think that that's a big copout..."  Wayne Shorter

kurtlives

My battery reads 8.32V...

+ probe on DC jack where + of battery snap is connected..... - probe on ground....

I get a reading of 2.26V and if you wait it slowly goes down...I didnt wait too long so it only dropped to 2.22V.
My DIY site:
www.pdfelectronics.com

gez

Somehow, you're switching the power off to the circuit in effect mode.  You need to make sure there's a wire from the + connection of your power to the + point on the PCB at all times.

Without being able to see how things are done, you're on your own I'm afraid. 
"They always say there's nothing new under the sun.  I think that that's a big copout..."  Wayne Shorter

kurtlives

Well I never touched the board besides switching R25.....

Ths is incredibly annoying....I have no idea what to do now.
My DIY site:
www.pdfelectronics.com

gez

Quote from: kurtlives on February 03, 2008, 05:41:58 PM
Well I never touched the board besides switching R25.....

Ths is incredibly annoying....I have no idea what to do now.

Trace the connection(s) from the V+ terminal of your DC socket, to the point on the PCB where the effect draws/needs to draw power.  Work out where the break is occurring - perhaps there's a V+ connection via the switch or something.  Use your DMM to figure out what's going on.  May the force be with you.

All I can suggest if you can't get it working is to post where you live.  Perhaps someone here lives nearby and could sort this mess out for you.  Either that, or wire up everything as was and live with a red LED (there are worse things in life).
"They always say there's nothing new under the sun.  I think that that's a big copout..."  Wayne Shorter

kurtlives

Where do you live?

I have a red LED in now and it dosent work.
My DIY site:
www.pdfelectronics.com

gez

Quote from: kurtlives on February 03, 2008, 06:22:48 PM
Where do you live?

I have a red LED in now and it dosent work.

London, UK (will accept plane ticket).

Does it still work in bypass?
"They always say there's nothing new under the sun.  I think that that's a big copout..."  Wayne Shorter

kurtlives

Ya it works when bypassed

Can I get you shipped over in a small crate?
My DIY site:
www.pdfelectronics.com

gez

Quote from: kurtlives on February 03, 2008, 06:40:17 PM
Ya it works when bypassed

Can I get you shipped over in a small crate?

It's a trivial problem, and many people who freqent this forum who are on your side of the pond could help you out on this one.  I still say tell us which state you live in and see if anyone steps forward. 
"They always say there's nothing new under the sun.  I think that that's a big copout..."  Wayne Shorter

kurtlives

I am in Toronto, Canada...

Know anybody around there?
My DIY site:
www.pdfelectronics.com