Amplifier board repairing. How to repair audio amplifier. stereo amplifier LA4227 amplifier repair
Ғылым және технология
Here is this video you will learn about amplifier repair. Audio stereo amplifiers are very commonly used everywhere. IC amplifiers are very common now a days. Here in this video one amplifier based on LA4227 IC is repaired. This is a common repair practice which you can apply on any electronics circuit especially audio amplifier. Audio amplifiers are accepting small audio signals from you audio source and amplifies them and sounds them on speakers. Here in this video I repaired a small 3 watts audio amplifier. LA4627 IC has nearly the same configuration. Hope you people may like this video.
#audio_amplifier
#amplifier_repair
#electronics_repair
Пікірлер: 3
Thank you I ve been battling to find the fault done the fault finding.now I must check the dry joint and loose component, Thank you
That chip reminds me of the stereo record players of the 1970's, two TBA type chips were used for the channels and the metal tabs in the center of the chips had a heatsink attached to remove the excess heat when the volume was high. A manufacturers cheat that i liked was the use of the record player motor to produce 21 volts to power the amplifier :-D The motor had a second winding for the 21 volts output, so no seperate transformer required :-D. It was a common trick for most cheap record decks in that era. It was a cheap record player, but the volume/balance/bass/treble controls were the slider type and mounted on a nice panal of shiney aluminium. I was impressed too easy in those days lol.
So slow video