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PostPosted: Wed Sep 13, 2017 4:58 pm 
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Hello guys, i'm currently having some issues with my echo royal. I cannot hear my guitar sound through the pedal, I only hear the reps of the guitar signal. In addition, a weird background noise appear if i turn the mix knob up, something like a "FFFFFFFFFFFFFFF". And it seems that the reps builds up on that noise. Apart from that, the pedal seems to work flawlessly. Here are some pics of my build :

https://ibb.co/hE5frv

https://ibb.co/jkHtBv

The cable of the right footswitch is broken on the pic. It has happened while I have flipped the PCB over in order to take the pics. Plus the led are not in the right direction, but I will fix this when the build will actually be working as intended since they were doing ok as far as I know


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PostPosted: Wed Sep 13, 2017 6:15 pm 
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Hi - welcome tot he forum! :D

Do you get any guitar signal from the dry output jack?

EDIT: you must get guitar through the dry jack if you're getting signal into the delay path. And I'm assuming you have signal in bypass.

Follow the instructions in this post: http://www.byocelectronics.com/board/viewtopic.php?f=9&t=52188

It is likely a bad connection near the mix pot or somewhere between along the dry signal path between C7 and C20.

Image

Image

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PostPosted: Thu Sep 14, 2017 3:15 am 
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Well , I took the time to redo my solders in this area as you said, plugged in, and it hasn't fixed the issue. But I took the time to troubleshoot this a bit further :

-When the pedal-to-amp cable is plugged in the mix output, I have no issue whatsoever when the pedal is bypassed, but only the reps and no original guitar sound when the pedal is on
-When this same cable is plugged into the dry output, the overall volume is dropped, whether the pedal is bypassed or not
-The reps knob behavior is suspicious : if it is turned fully counter-clockwise, there's a strange electric background noise, which disappears if I turn it up a bit. But if I keep turning this pot up, the aformentionned weird distortion appears and keeps getting louder and louder. It seems that the reps build up on this distortion. The sweet spot where I have no noise/distortion is somewhere like 9 o'clock


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PostPosted: Thu Sep 14, 2017 11:44 am 
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If you have volume parity issues, the most likely cause is that you have two or more resistor values mixed up. I can't really see well enough from your pic to check. You probably still have a cold solder joint somewhere if you aren't getting the dry signal path in the mix. Your wiring looks suspect. I see a lot of frayed strands.

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PostPosted: Fri Sep 15, 2017 5:57 am 
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Well, after checking the components, I realized that I have mixed up a resistance and a film capacitor, the number 473 that goes below the PCB. I have fixed this, and realized in the meanwhile that another resistance was not where it should be : the 4k7 was next to the bypass LED while it is supposed to be a 47k resistance there. So I fixed that as well. I took the time to re-solder pretty much everything, and I also have checked the pots connections with a ohm-meter. Everything was fine, but I now have an other issue :(

When I plug the pedal, I just have no sound whatsoever when it is bypassed. When the pedal is on, I have the dry signal, but no reps at all. The dry signal get a bit quieter if I turn the mix knob up. The others knobs appears to have no effect on the sound. If I use the dry output of the pedal, the volume is just low, wether the pedal is bypassed or not.

So here is a pic of the solder side of my PCB
https://ibb.co/h4dpm5

And three pics in close up of the components side of the PCB, going from left to right
https://ibb.co/j7PC65
https://ibb.co/jjUC65
https://ibb.co/dgbLtk

I also have one 474 film capacitor left, as well as the misplaced 4k7 resistance, a 12k resistance and a 18k resistance. They are for modding purpose, right?
https://ibb.co/f8DKKQ


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PostPosted: Fri Sep 15, 2017 10:39 am 
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karish63 wrote:
I also have one 474 film capacitor left, as well as the misplaced 4k7 resistance, a 12k resistance and a 18k resistance. They are for modding purpose, right?

These are updated components as explained in the instructions for resistor (pg 8) and cap placement (pg 12). The 474 is for C8, 4K7 for R42, 18K for R22, and 12K for R18.

http://byocelectronics.com/echoroyalinstructions.pdf

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PostPosted: Thu Sep 21, 2017 8:55 am 
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Well , my pedal is still not working, so I started to check the pcb with the multimeter. By using my OhmMeter set on 20000k and mesuring between the in jack and the bypass footswitch, I had no signal going through, but mesuring right after the C1 capacitor to the FT gave me roughly 10.000k on the multimeter. I decided to mesure the capacitor resistance and continuity and I just had a 1 being shown on the multimeter. Would this capacitor be the problem?


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PostPosted: Thu Sep 21, 2017 1:43 pm 
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byoc wrote:
If you have volume parity issues, the most likely cause is that you have two or more resistor values mixed up. I can't really see well enough from your pic to check. You probably still have a cold solder joint somewhere if you aren't getting the dry signal path in the mix. Your wiring looks suspect. I see a lot of frayed strands.

I agree with byoc. If you are unable to identify any more misplaced resistors, your soldering still can use improvement. Especially the wire joints. Symptoms like this are most often caused by a misplaced component or a bad solder joint.

Here are a couple more posts to help with soldering technique. Not how Stephen tins his wire before making the solder joint. This is very important.

http://www.byocelectronics.com/board/viewtopic.php?f=9&t=6401

http://www.byocelectronics.com/board/viewtopic.php?f=9&t=52211

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PostPosted: Thu Sep 21, 2017 1:49 pm 
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karish63 wrote:
Well , my pedal is still not working, so I started to check the pcb with the multimeter. By using my OhmMeter set on 20000k and mesuring between the in jack and the bypass footswitch, I had no signal going through, but mesuring right after the C1 capacitor to the FT gave me roughly 10.000k on the multimeter. I decided to mesure the capacitor resistance and continuity and I just had a 1 being shown on the multimeter. Would this capacitor be the problem?

The bypass switch is not in the signal path, so measuring resistance from the input jack to the bypass switch will not provide you with any information. And measuring the resistance of a capacitor also does not give very much information (the resistance should be several megaohms).

I think your issue likely has to do with a bad solder joint. Another thing you can try is to clean the solder-side of the pcb with some alcohol and an old toothbrush to clean off the flux and solder splatter.

If you'd like to trace the signal path, a BYOC signal tester is an excellent troubleshooting tool.

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PostPosted: Thu Sep 21, 2017 2:55 pm 
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Ok, thank you, I will have a look at these post and fix my build accordingly. I will keep you updated


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