KONZERT AV-502 Half channel problem , May 47volts na dco , step by step tutorial
40:24
KONZERT AV-502A AMPLIFIER || step by step repair tutorial
24:12
konzert - 602 my dco paano ayusin? ganito rin ba problema ng amplifier nyo? dc-out
32:43
Vbe. biasing Dapat mo ito malaman
17:02
Amplifier na Garalgal ang tunog , Paano ma trace kung saan ang sira ?
11:28
KONZERT AV502B HUMMING SOUND PROBLEM or UGONG GARALGAL || PAANO AYUSIN || BASIC TUTORIAL
32:05
KONZERT AV-502A || MGA TIPS AT DAPAT GAWIN SA PAG REPAIR NG AMP , SHARE KO NA
15:24
konzert 502b no audio output
37:57