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Any chance of the Leprechaun schematic? I'm trying to trouble shoot mine.

OK thanks for that. I can say that this is the second VHS that I built and this one is considerably noisier than the first. I did try this afternoon to swap the FV-1 from my Hydra. The one in the Hydra came out ok but the VHS pulled a pad so that board is now in the scrap bin. I'll wait for...

Right in reverse order... Pin 9 Freq 32.861khz withe a Vpp of 0.9v No changed with the eprom removed. Freq and Vpp on each pin 1 0/0 2 0/0 3 0/0 4 0/0 5 88/4 6 4.9/2 7 0/0 8 12.5/3 9 32.9/900 10 32.9/667 11 0/0 12 0/0 13 vrb/2 14 vrb/2 15 98.6/4 16 17ish/2 17...

OK, i'll have a read in the morning.

To clarify, the hiss is not present when the effect is bypassed. If the circuit is engaged with the FSW while the 3 effect switch are off the hiss is present. If the Chorus and/or reverb are switched on there is no change in the hiss nor is there any change with movement of the chorus or reverb...

No.

Here you go. Pin 1 and pin 28 again.

I've just finished building a VHS and it has a background hiss/white noise. This happens regardless of whether it is supplied from a 230vAC>9vDC wall adapter or a 9v battery. The noise is present with any or the three effects and when the boost is selected the volume of the hiss varies with the...