Friday, October 13, 2017

14 inch Hotpoint CRT Television (model 14J10) dead with power on led red now repaired.

I received this TV on my bench and the complaint was dead but power ON led was lite(RED) as it was in standby mode.

The owner has suspected a minor problem since the Power ON led was on and therefore expected minimum charges.

After opening the television I figured out that since the power On led is lite, power is reaching the secondary side.

Therefore with the power off I decided to do resistance test of the H.O.T transistor by testing between the middle (collector) and the emitter leg and I got a beep.

I reversed the probe and got another beep, with this I concluded the H.O.T is shorted.

Saturday, September 16, 2017

Sayona SHT-1132BT Woofer repair dead now repaired

A few days ago I got a knock at my gate very early in the morning and I wondered what could have necessitated the visit and I almost came out armed.

Upon opening the gate I found one of my neighbor standing there holding a woofer and after excusing himself he told me that he wanted it checked urgently and he suspect it burnt after the power surge though I can’t remember experiencing any in my house.

Saturday, September 9, 2017


I got a phone call from a customer who wanted his television checked and the complaint was picture is okay but no audio.

I requested him to bring it to the shop for checking and indeed he brought it up, i applied the power to confirm what he said about the tv initial symptoms and yes he was correct and therefore confirmed the television has audio problem.

Saturday, September 2, 2017

M-tech DVB-T2 decoder dead now repaired

I received a DVB-T2 terrestrial decoder and the complaint was dead, I applied the power and pressed on the power on button and indeed there was no sign of life whatsoever.

I checked the voltage across the bridge diode input and I got 240Vac according to the power grid here in Kenya and with that I confirmed all the circuit before this are working well.

I checked the voltage at the main capacitor and I got 328 Vdc and again I was happy with the reading

Monday, August 21, 2017

Solving CRT television picture colour problems- Picture is purple, Yellow, light blue.

The colours you seen on your TV screen is a products of the three primary colours (RED, GREEN and BLUE).
So if one of the primary colour is missing then the picture will be affected.

What you are seeing above there on that screen is a classic example of one of the RGB colours missing.

Tuesday, July 25, 2017

6 Things to Keep in Mind If You Want to set up a Tech Start-Up

Do you believe that to start a tech company, you must know coding or the intricacies of engineering? This is far from the truth. The founders of Airbnb were not technical people, they were design experts, and yet today it is a multi-billion-dollar tech company. Starting a technology company does not require you to be technically sound in experience but clear with your product, mission, and vision.

Be it a mobile application, a cloud-based service or a social sharing platform, a creative business idea does not need a specific skill. All it needs is a creative mind. There are many successful companies across the world that are living examples of the fact that you can start a tech company without technical experience if you keep the following points in mind.

Saturday, July 22, 2017

Visit to Arusha Tanzania-EAST AFRICA

We left Nairobi Kenya on 21/06/2017 at 1.00 pm, a group of 260 adults for a retreat in Arusha Tanzania which is our neighboring country.
A distance of 290 Kms, we used road transport so that we can enjoy the sceneries along the way, immediately we entered the Tanzania soil I noted the vegetation was very scarce and wondered if we just entered Kalahari Desert.