KONZERT 502B AMPLIFIER MAIN VOL & TONE CONTROL PROBLEM
28:34
KONZERT AV-502 Half channel problem , May 47volts na dco , step by step tutorial
28:21
KONZERT AMPLIFIER 502!!! BASAG TUNOG PA ANO AYUSIN!!!
8:14
Turuan kita paano Audio test main amplifier hanggang Tone control.
27:22
walang audio or sound sa tone control 502 amplifier
20:48
KONZERT AV-502A || mabilis pumitik ang relay
11:07
Bago magpalit ng output transistor, SAKURA AV 733
29:01
KONZERT AV502-A , Crackling sounds problem , may kaloskos na tunog
8:52