DIY CIRCUITS ELECTRONICS

this time im taking a look inside an old pa amplifier(PAL A208) made in greece, that is still used in a church.the only problem this amplifier had was that the potentiometers were a little ''scratchy''.i think it is interesting to look inside this device and see how electronics were made about 30 years ago and of course by hand. this video was shot with a samsung s21fe at 4k/60fps and the video is colour corrected because i wasnt using any external lights and had to white balance the video a little bit.keep in mind that there is some compression in the editing software and some compression by youtube when uploading a video. i would like to see comments about the video quality because im still experimenting.

an easy to build charger using cheap and easy to find components.li-ion batteries are very common these days.you can find them everywhere.in laptops,smartphones,e-cigs,etc. in this episode im building a simple charger that can charge 2x18650 type batteries at 1amp each.you can adjust the charge current by replacing a resistor shown in the video.this charger is using the very cheap and popular ic tp4056. you can find a module using this integrated circuit in a few variations, with or without battery protection circuit, with mini or micro usb input, even with type c usb input connector.it can be found everywhere,ali express,e-bay,etc.

this time it's a philips monitor-tv MWT1201T im fixing.on this device the red stand by led goes green for a moment and then red again.of course the device doesnt start.