Author Topic: Rat Clone - Dim LED  (Read 220 times)

Rat Clone - Dim LED
« on: July 27, 2020, 05:58:03 AM »
Hi All,

Having a very strange and minor problem with a Rat clone I've just finished. Everything works as expected except for the LED, which at first appeared to be not working at all. I was using a 2k2 for the CLR and it wasn't lighting up at all. Through trial and error I tried jumping the CLR sockets on the daughterboard and when I did so I got VERY dim illumination on the LED. That's the only way I can get any illumination at all. I'm wondering if there may be a CLR on the mainboard I may not have spotted? Attached are gut shots which I hope are clear enough and the schematics are here: http://pedalparts.co.uk/docs/Hype-R-Rat.pdf
Any help would be greatly appreciated.


antonis

Re: Rat Clone - Dim LED
« Reply #1 on: July 27, 2020, 06:14:59 AM »
Hi & Welcome.. :icon_smile:

On main board there isn't (or shouldn't be) any CLR..
(the only 2k2 resistor is R5 which is wired as NFB loop gain resistor..)

What kind of LED did you use..??
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..

Re: Rat Clone - Dim LED
« Reply #2 on: July 27, 2020, 08:00:16 AM »
Thanks for the welcome! Iíve tried a red 3mm, blue 3mm and yellow 5mm all of which I confirmed working against a 9v battery with a 2k2 in between.

bluebunny

Re: Rat Clone - Dim LED
« Reply #3 on: July 27, 2020, 08:43:41 AM »
Can you show us a picture of the all-important daughter board?
Ohm's Law - much like Coles Law, but with less cabbage...

antonis

Re: Rat Clone - Dim LED
« Reply #4 on: July 27, 2020, 08:45:38 AM »
Can you show us a picture of the all-important daughter board?

Suspicious mind.. :icon_mrgreen:
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..

Re: Rat Clone - Dim LED
« Reply #5 on: July 27, 2020, 09:05:57 AM »
Can you show us a picture of the all-important daughter board?

In all her glory...