Hi.
I have assembled K4040 tube amplifier kit,and it gives little sound!when i connect it to music the sound is very silent on the speakers, and when i turn volume on preamplifier tu full there is sound(silent) with distortion present(sorry about my english)!and on +V3L is only 160 to 200 Volts!Is maybe output transformer wrong conected?Please help
Most likely, the turn-on delay circuit is not working correctly, which prevents RY5 from energizing.
Thanks for reply.
I will check that and i will let you know
I checked turnon delay ,everything ok.!I found Bad contact on capacitor (450V/220uF)!voltage on V3L raise to 260-270V! But still very little sound!I bought new svetlana el 34 tubes but still nothing!Where could the problem be…?
Please help.
Best regards
Most likely, another assembly problem is at cause, however, it can be anywere.
I’m sorry but such problems are impossible to troubleshoot by mail.
We can offer inspection/repair if you return your amp.
You can return it to your distributor or direct to:
Velleman Projects Tech. Dept.
Legen Heirweg 33
9890 Gavere
Belgium
Please use appropriate packing, as we cannot accept reponsability for shipping damage.
US customers: Please call (817) 284 77 85 for RMA#
Hey I’ll buy it from you, looking for a winter restore/repair project. How much would you take?