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I posted under Photon Phuzz first build
The a problem which I worked out which was when I was re-soldering I accidentally swapped swapped the hot wires on the input and output jacks
The problem I now have, is that the bias pot doesn’t do anything, the voltage on the transistor doesn’t change at all, I have swapped the resistor and the <span class=”ILfuVd”><span class=”hgKElc”>potentiometer separately without any change, As best as I can understand the schematic, this appears to be all that controls the voltage to the transistor, all components are correct values. the voltage is consistently 6.1v </span></span>
<span class=”ILfuVd”><span class=”hgKElc”>Can anybody help me out I would be grateful as I am still learning this stuff and I dont understand this</span></span>
Tim
Check the bias pot changes resistance as you turn it Tim it’s wired as a variable resistor so the pot along with R3 bias the transistor
Place your meter probes on lugs 1 and 3 and resistance should alter as you rotate the pot
Pot is working OK but value isn’t changing at transistor, I cant see any obvious shorts on the board I am thinking of jumpering between the components to see if there is a break in the tracks on the board
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