Search found 393 matches
- 06 Jun 2023, 11:18
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: Ibanez AD-80 Repair
- Replies: 6
- Views: 518
Re: Ibanez AD-80 Repair
Sadly the pedal should work even without the diode...
- 07 May 2023, 09:47
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: MXR MicroChorus BBD Mod
- Replies: 1
- Views: 403
Re: MXR MicroChorus BBD Mod
Sorry for the late reply, MNs chips usually are clock-hunger chips, than SADs... Just remember, SAD512 is 512 stages BBD while 3007 is 1024 stages, but SAD got internal clock divider in order to provide the 2 clock phases needed. Then with the same VCO clock you should achieve the same delay time. W...
- 01 Apr 2023, 10:28
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: MXR - Micro Chorus [schematic]
- Replies: 165
- Views: 136454
Re: MXR - Micro Chorus [schematic]
On my test circuit, I used the first transistors couple I found in my drawer... BC549 I simply reversed the tranny case... Any NPN BJT should work, just check out clock frequency, if it gets too low, it will "whistle" or make funny/annoying noises, in case, just lower caps value I don't kn...
- 17 Feb 2023, 17:40
- Forum: DIY Projects
- Topic: Switchable PS
- Replies: 10
- Views: 1067
Re: Switchable PS
LM317 just need swapping 2 resistors...
- 26 Oct 2022, 10:23
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: XO Stereo Clone Theory issues
- Replies: 31
- Views: 3680
- 20 Oct 2022, 16:47
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: XO Stereo Clone Theory issues
- Replies: 31
- Views: 3680
Re: XO Stereo Clone Theory issues
You can try and check tracks continuity, while stressing PCB...
And/or check supply voltage, stressing and whacking PCB
And/or check supply voltage, stressing and whacking PCB
- 17 Oct 2022, 10:56
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: XO Stereo Clone Theory issues
- Replies: 31
- Views: 3680
Re: XO Stereo Clone Theory issues
Clone theory and small clone work both @9V.
- 16 Oct 2022, 12:38
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: XO Stereo Clone Theory issues
- Replies: 31
- Views: 3680
Re: XO Stereo Clone Theory issues
on this datasheet https://pdf1.alldatasheet.com/datasheet ... N3007.html you can see diagrams traced with supply voltage up (down?) to -5V.
In my personal experience, I couldn't get MN3007 working very well below 12V, surely really bad under 9V.
In my personal experience, I couldn't get MN3007 working very well below 12V, surely really bad under 9V.
- 14 Oct 2022, 10:14
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: XO Stereo Clone Theory issues
- Replies: 31
- Views: 3680
Re: XO Stereo Clone Theory issues
MN30xx chips have pin 1 voltage more positive than pin 5, whereas MN32xx chip have pin 1 voltage more negative than pin 5.
What you use as GND is inifluent, as long as pin 1 is more positive than pin 5 for MN30xx
What you use as GND is inifluent, as long as pin 1 is more positive than pin 5 for MN30xx
- 13 Oct 2022, 16:41
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: XO Stereo Clone Theory issues
- Replies: 31
- Views: 3680
Re: XO Stereo Clone Theory issues
yes
pins 2 and 6 got clock
pins 2 and 6 got clock
- 12 Oct 2022, 10:13
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: XO Stereo Clone Theory issues
- Replies: 31
- Views: 3680
Re: XO Stereo Clone Theory issues
@ MN's out pins you got the same signal injected at pin 3 altough delayed and "chopped".
@ 4047's pins 10-11 you got clock, it should be a square wave. When it suddenly drops below ultrasonic frequencies, you can hear the noise recorded in mp3 n°2
@ 4047's pins 10-11 you got clock, it should be a square wave. When it suddenly drops below ultrasonic frequencies, you can hear the noise recorded in mp3 n°2
- 10 Oct 2022, 17:17
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: XO Stereo Clone Theory issues
- Replies: 31
- Views: 3680
Re: XO Stereo Clone Theory issues
You can hear that noise when there's loss of power supply in chorus or flanger usually, that's why I thought about issues in tracks or cold solders.
If you have DMM with max/min function, you can check supply at VCO, the clock chip.
BTW, it occurs in particular circumstances? Is it repeatable?
If you have DMM with max/min function, you can check supply at VCO, the clock chip.
BTW, it occurs in particular circumstances? Is it repeatable?
- 06 Oct 2022, 16:48
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: XO Stereo Clone Theory issues
- Replies: 31
- Views: 3680
Re: XO Stereo Clone Theory issues
what about the other weird sounds (the one at the start and the one at the end of the video) It looks related with power supply noise to me... the oscillation looks like a power supply loss in clock generator it's really strange rate pot can make those heavy scratches. Sure there's no cold solder o...
- 05 Oct 2022, 19:30
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: XO Stereo Clone Theory issues
- Replies: 31
- Views: 3680
Re: XO Stereo Clone Theory issues
hi wui, in my reply above, I assumed you messed with trimmer...
What's the issue with it?
What's the issue with it?
- 02 May 2022, 10:21
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: Help with CE-2 build
- Replies: 2
- Views: 419
- 06 Apr 2022, 11:34
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: Boss OD-1B no sound
- Replies: 12
- Views: 950
Re: Boss OD-1B no sound
0V on pins 6-7 suggests you have a short between pot's pin(s) and GND (enclosure perhaps?)
- 03 Apr 2022, 18:18
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: Boss OD-1B no sound
- Replies: 12
- Views: 950
Re: Boss OD-1B no sound
what's the voltage at pins 5-6-7?
- 03 Mar 2022, 11:39
- Forum: Vintage Stompbox Corner ( ... - 1975)
- Topic: DOD - 230 ( Noise Gate )
- Replies: 86
- Views: 49964
Re: DOD - 230 ( Noise Gate )
Yes, if you connect the pad connected to 4066's pin 5 to GND, via one (foot)switch, you will force the effect to be always on.
- 24 Feb 2022, 18:34
- Forum: Vintage Stompbox Corner ( ... - 1975)
- Topic: DOD - 230 ( Noise Gate )
- Replies: 86
- Views: 49964
- 24 Feb 2022, 12:08
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: MXR - M-108 Ten Band EQ new version [schematic]
- Replies: 79
- Views: 143344
Re: MXR - M-108 Ten Band EQ new version [schematic]
anything above 16V will do