Red_to_Black

After almost a six-month break, dabbling with three Reditune players, a couple of 8-Track recorders, and various bits of test equipment, (Ferrograph RTS-2, Tripler Tester, Textronix TSG95 and OWON XDD...

Hi Wayne, why not consider using case, meter and switches, to build a better version of what your new purchase could have been. How about adopting this very good circuit? You could modify to utilise t...

@sundog You would have been less than impressed with the first versions of the A823 chassis. They suffered from bent verticals, some so severe I don’t know how they got past quality control. It was fo...

The little switched-mode regulators turned up, they are indeed the same size as the 7805 TO-220 package. Attachment : 20220629_155039.jpg Attachment : 20220629_155040.jpg One was duly la...

@malcscott I would dearly love to see the Ledco circuit if anyone has a copy, I don't think I've ever even seen a picture of a board. The regulation is as good as the original and with all the RBM cha...

After various diversions I’ve eventually come back to these sets and have a progress update. I mentioned before about the lack of field flyback blanking and this was traced to a short on the beam limi...

Just another observation but a BC109 is NPN whereas a BC186 or BC153 is PNP.

Posted by: @jayceebee Just another observation but a BC109 is NPN whereas a BC186 or BC153 is PNP. Good Lord, I must have been slipstreaming when I suggested a BC109 - well spotted! I'd forgotten th...

Just dug out the better looking of the 2 CDP-17F CD players and sat it on top, it looks great and mostly sounds good too! Attachment : 5CF78DDC-F4AA-41CB-A574-56EBB9F7CCBE.jpeg One minor snag, ...

I don't own a Phabrix (because price!) but I have the use of them at work. They run Linux (Tux appears at switch-on) and are damned handy, especially the one that has a fibre SFP as so much of my work...

@jskinner97 When we get to the bottom of this you'll have learned something about fault diagnosis though, so it's not all in vain.

This wee beastie has been on my ‘most wanted’ list for some time, it’s a little boom box (well, quite a big heavy one actually!) from 1987, and would have been quite expensive when new. It’s a modular...