Hello all Helpers!
Hello Dave,
I wanted to give a little update my tiny little project.
THE PROBLEM IS SOLVED!
With the Tips you gave me here i was able to locate the DEAD T1 and replaced it with an old desoldered BC338 i had lying around for decades of no use. Yeah sorry, i didnt had a BC337
![Smiley :)](https://www.eevblog.com/forum/Smileys/default/xsmiley.gif.pagespeed.ic.R8GFI-pF6f.png)
And the internet said a BC338 would replace a BC337, so i tried and it worked. The more detailed process can be read on my project page at
www.awerner.homeip.net.
THANKS FOR ANY HELP/ADVICE!
THANKS TO ANY MAKER WHO FREELY SHARES KNOWLEDGE, VIDEOS, TUTORIALS AND OTHER FREE LEARNING MATERIAL ON THE INTERNET!
Information wants to be free! Keep information free for everyone!
best regards
Axel
@DAVE: gotcha! MANY little experiments and basic learning circuits are coming up on me. Ive got to re-learn so much after 20 years doing nuthin in electronics. Covering basic 555 and 47xx oscilators, buildin basic ESR meter to test electrolyt caps, integrated voltage regulators to "improve" the old CONRAD PSU with a much better highly linear high current regulator, basic op-amp circuits to adapt voltage ranges of sensors or to sense current flows through shunt resistors, variable electronic DC dummy load to test small PSUs or regulator circuits, also very interesting to me are simple switch mode PS like step-up/step-down converters, fly-back transformers etc.
And somewhere in between ill have to repair my old portable Standard C528 HAM Radio which seems to have died in the last 12 months or so (problem: permanently transmitting). I already googled the problem. It seems its one of many common problems todays with the C528. Most often the reason are the SMD electrolyte caps and tantals that are dying slowly over the last 15yrs or so. That will be a dirty job coming up, replacing all the SMD caps in there. But just buying a new radio would not be that much fun and interesting
![Smiley :)](https://www.eevblog.com/forum/Smileys/default/xsmiley.gif.pagespeed.ic.R8GFI-pF6f.png)
73 et 55 de Axel (DG2GWE)