Small Clone not working

Started by Lee_ranaldo, June 09, 2005, 12:58:22 AM

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Lee_ranaldo

i've build the Small clone from Francisco's Site (tonepad)

All the voltaje seems to be normal..

I only get a clean sound without modulated sound from the MN3007

i know this chip is good b/c i took it from a randall amp.

i've used 2N3904/2N3906 for transistors.

pin 10-11 of CD4047 remains stable with 4.5 volts

pin 1 MN3007 reads  around 8 volts.

how do i check with the scope if the CD4047 is really working?

i've got the New Sensor Schematic for this one. but i haven't tried it.

help me.

Bucksears

Lee,
I think the first thing I would fix would be the transistors. The Small Clone calls for 2N5087 at Q1 and 2N5088's for Q2 & 3. The 2N3904 isn't a replacement for either one of those.
Make sure you always have the correct parts being called for before trying to troubleshoot.

Hope this helps,
- Buck