DIY CIRCUITS ELECTRONICS

This time im looking inside a conceptum mini ups Mr Cable GM-4 to see what's wrong with its 12v output.This device is usefull when there is power outage for some reason and keeps the internet-telephony working until power is restored.

This time im repairing a samsung led tv UE32F5000AW. The device has audio but not picture.In this video you will see how to dissasemble the device to test and replace led strips-bars.Of course before doing this, make sure that the problem is the backlight and not something else like the t-con board that often fails on this model.Also you will see why you should always replace all led strips-arrays-bars. feel free to post your comments below.

Another led tv repair.This time it's an LG TV 32LB560B.The device has two round white spots - patches on screen which is very common these days for many tv brands,also the screen is not very bright.let's see what's goin' on inside this tv and how to dissasemble and repair it. If you liked this video or helped you in some way consider subscribing to this channel. Also feel free to leave any comment.

this video is about SONY KV32U2000.the stand by led blinks 4 times and the tv doesn't start. this is a common symptom in many sony tv models.also other brands have the same issue but they dont have the blinking error code that sony does.

components needed R1=10K RESISTOR R2=1K RESISTOR R3=2K2 RESISTOR Q1=BC547 OR EQUIVALENT TRANSISTOR D1=LED DIODE IR RECEIVER - ANY INFRARED RECEIVER FROM DEVICE THAT OPERATES WITH REMOTE CONTROL AS LONG AS YOU KNOW THE PINOUT.

in this video im testing LM117-ADJ. its a low dropout voltage regulator bought cheap from ebay..is it worth bying or not?is it real or fake?whould you trust it in a project or device?

this time im fixing a led table lamp a friend gave me...and then a small modification..

a new video showing how i test the led bars of a tv & how to find which led is damaged. in this video im using a small device i made long time ago that allows me to inject voltage to a led or led bar and see if it is working. video of this device and how it is made in this link here

a very common fault on many philips televisions with the CHASSIS AA5 AB watch the video for details about the repair..

in this video im fixing a samsung led tv with purple spots and purple picture. also we will see what causes the purple spots to appear on the screen and why the picture looks kinda purple... if you liked this video or helped you, consider making a donation or at least subscribe to my channel. it really helps... thanks!!

another repair..this time is an LG HOME CINEMA that was dead.no power at all.the model is HT762TZ. the repair is relatively easy if you replace the components shown in the video. if you liked this video or helped you in some way consider making a donation using the donate link on the upper right corner or at least subscribe to the channel.

another common symptom in many tv's that use the vestel power supply.this time is an f&u tv but you may find the same power supply board in many other brands such as philips , hitachi, turbo-x, jvc, and more...the psu board is made by vestel and the part no is 17ips61-3.

another common fault in many lcd tv sets.this one is for the samsung LE20S81BX/XEH but this kind of failure you will find it in other models and brands too. in this video im showing you how i fixed this tv and how to remove and replace bad components. if you liked this video or helped you consider making a donation (any amount) to help the channel grow.

today im showing you how i usually disassemble a laptop battery pack to harvest or salvage the 18650 li ion batteries that are inside.also you must measure the voltage of each battery to get an idea if the battery you salvaged is in good condition, although further tests should be done to determine that. most of the times if a battery is discharged below a point,usually 2.5v is the lower limit in some batteries then it will probably be damaged. this way i have always batteries to use in various electronics projects. please be extra carefull when ''playing'' with li-ion or li-polymer batteries beacuse they might overheat or explode if shorted,puntured e.t.c. also use gloves if you see signs of leakage. if you liked this video and helped you consider making a donation (any amount) to help the channel grow.