Sony DVD player model DVP-NS628P with “No disc” symptoms now repaired.

I received this DVD player from a client who got my contact via our estate whatup group, I picked the machine from his house and headed to my shop which is around 3Km from where I live.

Upon reaching the shop I applied the power to the DVD and noted the machine was taking too long to load the disc and after some few minutes displayed No disc error.

I then opened the DVD player and went straight to the disc loader section, first let me point out that the customer has hinted to me that the machine was from another technician who was not able to solve the problem.

Usually items from other technician are difficult to repair and therefore I was very careful because a tech with limited knowledge in repair would do more harm to the equipment through guesswork.

So I begin my troubleshooting by doing visual inspection for any mis-handling and noted a small micro switch which detect the Disc was not locking and this may explain why the disc kept on rotating because the machine could not detect the first track.

Samsung 40-inch model LA40R51B, no display, backlight on and sound okay now repaired.

I did a facebook ad and got a client who wanted his television checked, I was given direction using google map since it was a new estate from where I have my repair shop.

After the appointment I started my journey to the site and after one hour I arrived at the ping address by google which was just a stone throw from the actual client home.

We linked up and went into her home and I was shown the television, first I had to apply the power to confirm the customer complaints which turned out to be true.

After some inquires I was told a technician came to check the television and took a small thing(circuit) which according to the customer I concluded it was the tcon board.

After one month the small thing was returned and re-installed back.

With that information I decided to open the television and headed straight to the tcon circuit and after seeing it, the customer confirmed it was the thing the technician had taken before.

21 Inch Supra CRT television hit by power surge now repaired

I received this television from a client who suspected the cause of the dead to her television was power surge.

Usually power surge related problems are easiest to repair unless there were other complications before the power surge.

Suffice to say here that most components to die in a power surge related cases affect only the power supply section and dead components are usually catastrophic and one can even see affected components with naked eyes.

After opening the set, I went straight to the power supply section and this is what I saw.

LCD LED Television training seminar at Airport Gate view hotel Utawala-Kenya

Calling on all LCD LED television repair technician

      

On Wednesday 26th February 2020 Hum-tech electronics is going to hold a training seminar at Airport Gate view hotel Utawala.

Time: 08.00 am – 4.00 pm

Participation fees- $30 USA dollars (3000 Kshs)

What you will learn

1. Introduction to LCD-LED television
2. Understanding LCD-LED television backlight(LED/CCFL)
3. How to access LED backlight like a professional without breaking the screen.
4. How to change LED television backlight strip or individual LED.
5. How to order and buy spares parts online safely.
6. How to advertise your business using Facebook.
7. Seminar include theory and practical
8. Free snacks

The class will compose of only 10 participants, the eleventh student will be booked in the next class.

Get Direction

BOOKING:whatsup  +254 733 475 040  

Facilitator: Humphrey Kimathi

Hotpoint woofer model HA14630BT came in stuck in standby NOW repaired

I received this audio machine from a customer who was referred to me by google search.

The complaints were as you can see, the machine was stuck in Bluetooth mode and never change and no action on remote or keyboard.

Understanding tcon voltages

For those who have been doing LCD/LED repairs will agree with me that screen issues  are very common and are almost always caused by the small circuit usually located on the top of LCD panel as the major cause of these problems.

These issues are quite common and therefore a tech without adequate knowledge on how this circuit works will have it tough on his workbench.

Besides having it rough will also part with less profit since most of the television will be send back to the sender for lack of repair.

The most effective way of troubleshooting is voltage testing, in this  article I am going to look at critical t-con voltages and what happen if they fail.

14-inch China made CRT television screen colored with a black slip at the bottom of the screen now repaired:

I received this television from a customer who wanted it checked and the screen had spots and the bottom of the screen had a blank slip across the screen which made the height narrow.

Usually if there is something on the screen it can help the technician locate where the problem is even without opening the set.

In the case at hand since the screen height is affected we can conclude that the vertical circuit has a problem.

Therefore, after opening the set I will proceed straight to the vertical circuit.

This television was using the popular ic LA78040 which is attached to the heatsink using a bolt as you can see below.