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out the signal path and notice the noise at BLUE6, then it is likely that Q1 is bad. If the

noise begins at BLUE12 then it is likely Q2. And if it doesn't begin until BLUE16, then it

is likely Q3. If you signal stops abruptly at BLUE6, 12, or 16, then the corresponding

transistor is likely completey dead or there is a problem at one of the GREEN locations.

Содержание E.S.V.

Страница 1: ...ting the PCB page 7 9 Wiring page 10 Finish up page 11 12 Troubleshooting Guide Schematic page 13 19 THIS PEDAL HAS A POSITIVE GROUND YOU DO NOT NEED TO USE A SPECIAL POWER SUPPLY WITH REVERSE POLARIT...

Страница 2: ...7uf aluminum electrolytic 1 47uf aluminum electrolytic Diodes 1 1N4001 Transistors 3 OC75 germnium transistors 3 transistor sockets Potentiometers Be sure to snap off the small tab on the side of eac...

Страница 3: ...has little to no sonic affect on the circuit Step 2 Add the larger black plastic diode with silver stripe 1N4001 Make sure the stripe matches up with the layout on the PCB The cathode striped end goe...

Страница 4: ...tab of the socket to the tab of the PCB layout Step 4 Add the bias trimpot Do not be confused by the fact that the PCB has holes for 5 legs and the actual trimpot only has 3 This is so that the PCB ca...

Страница 5: ...apacitors These are not polarized and can go in the PCB in either direction Step6 Add the aluminum electrolytic capacitors These are polarize The positive end goes in the square solder pad The positiv...

Страница 6: ...older lugs are pointing down The washers go on the outside Use a 10mm wrench to tighten but only snug Do not over tighten the pots You should leave the pots somewhat loose until they are soldered to t...

Страница 7: ...ld do the actual soldering on the topsid of the PCB Read through all the steps in this portion before doing anything so that you can get the big picture Step 2 Install the LED but do not solder it or...

Страница 8: ...line up with the eyelets on the PCB You may need to bend the leads of the pots into place if they were bent in shipping Step 4 once you have the PCB in place snug the nuts of the pots and toggle switc...

Страница 9: ...elf adhesive nylon standoffs from the underside of the PCB into the large mounting eyelets but do not remove the paper backings yet Step 3 Install the LED into the underside of the PCB but DO NOT SOLD...

Страница 10: ...WIRING...

Страница 11: ...urns is they are used Install your transistors into their sockets with full leads to test the pedal first When you know that your pedal works and sounds the way you expect it to then clip the leads an...

Страница 12: ...u can use your ear for this There is no correct bias voltage Install the base of the enclosure with the 4 screws that came with your kit Add the rubber bumper feet unless you re a velcro person Add th...

Страница 13: ...Trouble Shooting Guide...

Страница 14: ...not getting a reading here keep the black probe on the NEG eyelet and move the black probe to one of the locations If you do not get a reading now you likely have a bad connection somewhere along the...

Страница 15: ...en the two locations and between the two locations If you do not get continuity between the locations check for continuity between lugs 4 and 5 If you do not get continuity between the locations check...

Страница 16: ...the PCB is simply a means of connecting one component or wire to another component or wire So when you touch your probe to the test location you want to touch the probe to the exposed component or wi...

Страница 17: ...ou should get 9V at all black locations 4 Test the audio signal path Do this using a Signal Tester A bad solder joint anywhere along here will obviously mean no sound If you signal level drops at BLUE...

Страница 18: ...If the noise begins at BLUE12 then it is likely Q2 And if it doesn t begin until BLUE16 then it is likely Q3 If you signal stops abruptly at BLUE6 12 or 16 then the corresponding transistor is likely...

Страница 19: ......