The end of the (upgrade) road?

[CageyH]

You can see the discolouration quite clearly.

PXL_20260508_093204207.jpg

[Tim]

Yup, compared to my board that is quite a difference.

[Macca]

You can see the discolouration quite clearly.

PXL_20260508_093204207.jpg

Do you think that's because you had it wired up to be powered all the time and have you fixed that now?

[CageyH]

Yes, I think so.
The power switch on the TT has been wired into the power circuit now, so it is fixed.

[CageyH]

Yup, compared to my board that is quite a difference.

And on your board, I would not change the resistors.

[Tim]

And on your board, I would not change the resistors.

It seems in reasonably good shape, I have yet to test the capacitors with a multimeter, only done a visual check.





That's the current board, the one from Japan is similar, if not a little cleaner.

[CageyH]

I don't think a multimeter will give you an accurate reading with the capacitors still fitted to the board.

[CageyH]

The next job on the list is to change the output capacitors on the BB3. I have some JLX aluminium foil capacitors arriving next week. These were recommended by Oli.
While I am in there with my soldering iron, I am tempted to change the diodes in the power supply. Standard parts are UF4007, so I was think SF4007 may bring a minor upgrade, potentially lowering the noise floor, very slightly.

[Tim]

I don't think a multimeter will give you an accurate reading with the capacitors still fitted to the board.

I've no idea if that'll work as I've never done it before, just something I was reading recently - I'm learning on the hoof at the moment

I did wonder if that would work, so I'll give it a miss.

[CageyH]

If you Techie is from the 80s, the capacitors are 40 years old, so due a change.