Schmidtn

Oy, I have a questions,in DS-1 mod, there's a 47pF cap soldered parallel with diode (D5). My questions : 1. What is the purpose of this cap. 2. How much it affects the overall sound ?? Thx

I've check the polarity. It's right in the place. I use the stock LED like the instruction's recommendation. What do you mean about forward draw ?? I don't use a Bright LED.

Mr. Schmidtn, I finally revealed the problem. I’m wrong in putting the LED !! Hha, I’m so sorry Mr.Schimdtn for making this problem becomes difficult. It’s quite a big mistake for me. The problem is, the cathode/anode in my LED has a reverse position than my ordinary LED. I wonder why this could be happen in production. Is there’s no standard in putting the cathode/anode side of the LED ? I forgot to see the length of the lead. In my previous project, I always indicate the side by looking of the size of the electrode. Ordinarily, the bigger electrode inside the LED always be the cathode side but in my LED it’s the positive side. I’m confused with the production consistency of LED Finally my ASE mod is success. It lighted as I picked the string. But, I got a problem again T_T. When I connected the LED with cable, I soldered the back side of the PCB. When I soldered the PCB, I saw there’s a bad joint in other part. I soldered that bad joint & then continue to finishing my ASE LED cable. When I plug in the guitar, my DS-1 SOUNDLESS. There’s no sound from my DS-1. It’s LIGHTED but there was no sound. I checked the ASE LED, it only lighted up when I switch my pedal from On to Off. I’ve checked the cable, guitar & amp, no problem. I’ve tested my system with other pedal & it’s worked. My system has no a problem. I wonder there’s some problem on my DS-1. When I checked the joint (On the in/ou Jack, pot etc) there’s no problem. I wonder if this caused by my failure in soldering the bad joint which I found. I realize that I soldered the lead of the Transistor !! Is my prediction true ?? Is my transistor overheated. I’ve checked all of the cable inside the DS-1. There’s no problem. The main problem: Lighted but soundless. Thx

I looked at the PCB. I don’t saw any short circuit. The transistor which I actually soldered is Q7. I’m sorry Mr. Scmidtn, I don’t know to read Circuit well. According to your view, is this caused my case, ‘Light but not have a sound’. When I looked into the schematic, I saw that this transistor located before output transistor. Thank you for your attention

Ok, I mind it. Thx before. Oh y, I got a same problem to my Keeley-Like Mod DS-1 (Like in this site) that I done by Myself. I change 3.9 K LED resistor (R35) with 2.4 K resistor. The Ultra Bright LED shifted to green & it's dimmer (Not so Dim) than the LED which connected to 3 Volt source. If my LED connected to 3V source it light so clear & the color is perfect blue. It's lighter than the LED which I connected to my DS-1. They are SAME LED My question, Is the resistance of my resistor (R35 DS-1) should be increased or decreased ?? If I use lighter LED, what should I do with LED resistor ?? According to your post before why with math we got a resistance value in order of 100 ??

Sory, I mean, I use the LED run through the adapter directly (The LED not in circuit). The LED light properly. In 3V, It glows Blue. When I change the voltage to 4,5 V, it shifted to green. What I got from this experiment is the voltage of my LED is around 3V. Is this right according to most of the spec of the LED especially the 3mm ultra bright like I had. I'm sorry because I got a lack of info about this LED. When done the math, I got actually resistance value around 240-300 ohm. Can I use this value?? I'm sorry for this complicated question. I'm confused because at the keeley site in modding the DS-1, He said that the LED resistance value should be around 1.2-3.4K if we want to install the 5mm LED. I conclude that the 5mm LED could be same as 3mm ultra bright. Is my state true ???