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Topics - Mycpotter

#1
Gday All,

Could somebody help me out with this one please?

Finished populating my Harbinger yesterday but im having a few problems with it  >:( -

I can get a bypass signal through fine and signal passes when the effect is on but there is no modulation. Lamp is always on and rate LED does not light at all. Tried jumpering the LED to see if that helped with the lamp pulse but makes no difference.
Only the volume control works, Intensity and Speed do not. Both Mod/Vin and C/V switches have signal when in both positions. Mod setting seems to get the signal to boost a fair bit so I guess that's working fine?
I have double checked all wiring, soldering, resistor values, cap values, electrolytic orientation, transistor orientation, ic's, etc and everything seems fine to me.
Gain and Offset trimmers adjust the lap intensity just fine so I cant see a problem there, I have even checked if the LDR's are working on a breadboard beforehand and they were working in both light and dark conditions, I also checked them with a torch while passing a signal to see if any modulation occurs and there is nada.

Got the DMM out and have the following voltages  -

LT1054 pins
1 - 1.10v
2 - 4.99v
3 - 0.00v
4 - 0.01v
5 - 017v
6 - 2.55v
7 - 1.38v
8 - 9.58v

LM7815 Pins (viewed L - R, pins at bottom)

Left - 18.14v
Middle - 0.00v
Right - 14.86v

Any other voltages I need to check?

Im running a 1spot 9v without the filtering to power it, filtering or no filtering its the same problem. Nothing has been substituted at all, its straight a vanilla build.

Any Help is hugely appreciate!

Thanks, Mick.
#2
G'day all!

Just thought I'd upload a couple of pics in progress of one of my Mini Muffins.

I have used the specs from Kit Rae's site for the 47 Rams Head muff for this build which is using full size components and will eventually live in a 125b enclosure as I tried 1590a size with 1/8w resistors and unfortunately don't have the patients or steady hand to pull it off (maybe one day).

This ones also using NOS 2n5133 transistors with 1n914 diodes I sourced from eBay. The second one is at Civil War spec with NOS 2N5828 transistors and 1n4148 diodes. Hopefully both rocked and boxed by tomorrow night..

Thanks for taking a look and thanks to Pickdropper for the awesome, easy to work with PCBs!!

47 Rams Head

Transistor closeup


Civil War (Right) next to Rams Head

Civil War closeup





#3
Build Reports / Just finished Kingslayer
April 01, 2013, 12:37:50 PM
Hi all,
Thought id put up a pic of my just completed Kingslayer as my first post. Hope you like it  ;D
Was also my first attempt at a waterslide decal, seems to have worked quite well.

Please excuse the crappy pic!