Friday, November 25, 2016

An overview of DVD Player, Power board, Loader and Decoder

Basically a DVD player has three main units which work together in harmony as shown in the figure below.


Thursday, November 24, 2016

MK-328 Transistor Tester Capacitor ESR Inductance Resistor Meter LCR NPN PNP MOS

 Multi component tester now available!




Features:
 1. Using 2014 V1.11 latest version of the software, using the M328 chip, more features. German author Karl - Hans design in hardware and software compatible with the majority of fans of easy software updates escalating.
2. Using 12864 dot matrix LCD display richer content, illustrated.
3. Use a 9V battery, with battery compartment for easy battery replacement.
4. Measure the inputs have protection circuit, false positives can reduce the damage caused by the charged capacitor meter.
5. With a standard 10-pin AVR-ISP download outlets, convenience is programmed .
6. affect the accuracy of the relevant resistance using thousandth film resistors, and the remaining one percent is also used thin-film resistors.
7. The instrument has bracket for easy use.

Specification:

Dimensions: 83(W) x 152(height) x 34(depth)mm
Weight : Host ( without battery ) approximately 200 grams
Current: When 9V voltage, stable operating current of about 20mA
Shutdown Current: 20nA
Resistor Test Range: 0.5-50M
Inductor Test Range: 0.01mH-20H
Capacitor Test Range: 25pF-100000uF
Package includes:

1pc Transistor Tester
  
Now available and ship worldwide free shipping!

Sunday, November 13, 2016

21 Inch CRT Television dead now repaired


First let me point out this television belong to my youngest sister, she called me to pass by her place but due my busy schedule I was not able  to make in time.

Therefore she decided to ask for assistance from the nearest technician near her home town.

Of course this I came to learn later otherwise according to her the television never left the house.

I passed by her place and after a small briefing about how the problem started, I was told that there was power brown out in the estate when the problem started.

For those who don’t know what is power brownout- electrically speaking is a drop in voltage in an electrical power supply,so named because it typically causes lights to dim.

21 Inch CRT Television dead now repaired

First let me point out this television belong to my yongest sister, she called me to pass by her place but due my busy schedule I was not able  to make in time.

Therefore she decided to ask for assistance from the nearest technician near her home town.

Ofcourse this I came to learn later otherwise according to her the television never left the house.

I passed by her place and after a small briefing about how the problem started, I was told that there was power brown out in the estate when the problem started.

For those who don’t know what is power blownout- electrically speaking is a drop in voltage in an electrical power supply,so named because it typically causes lights to dim.

Monday, October 31, 2016

Causes of vertical lines in LCD Television

Vertical lines in LCD television maybe as a result of several causes and here is am going to highlight a few which may be considered main causes.

1. Top on the list is the T-con board (timing control board) this is a small board usually under shield, used to converts the video signal into something the LCD panel can understand (synchronizing).

Causes of vertical in LCD Television

Vertical lines in LCD television maybe as a result of several causes and here is am going to highlight a few which may be considered main causes.

1. Top on the list is the T-con board (timing control board) this is a small board usually under shield, used to converts the video signal into something the LCD panel can understand (synchronizing).

Causes of vertical in LCD Television

Vertical lines in LCD television maybe as a result of several causes and here is am going to highlight a few which may be considered main causes.

1. Top on the list is the T-con board (timing control board) this is a small board usually under shield, used to converts the video signal into something the LCD panel can understand (synchronizing).

So if the board has a problem may cause complete no picture or vertical lines on the screen.


2. Low Voltage Differential Signaling (LVDS). Converts the 8-bit parallel RGB video information into a set of high speed serial lines for noise-free transmission to the T-CON board.

So if this cable is damaged the transfer of the signal from the processor to the LCD screen will be affected and therefore this may also cause vertical and horizontal lines on the screen.



3. LVDS connector. Sometime the tab connector to the LVDS cable may get loose and this also can cause vertical lines on the screen, that is why it is important to always check the cable is well connected.

If you get vertical lines on the screen or even the screen is blank could point to a loose connection at the tabs.


That's all for today friend, if you want to go deeper check out more material here. and for those interested in LCD Monitor repair i highly recommend the eBook below.





Saturday, October 15, 2016

14 inch LG super slim Television with wide horizontal line repaired.

I received a phone call from a customer who wanted to have his TV checked by a technician and on my way home from work, I passed by his place.

On reaching the place I found the TV already on and the audio was present and clear but the screen as you can below.




Friday, October 7, 2016

Troubleshooting CRT Television with HV (high voltage) is present but the screen is dark (blank)

There are several factors which can cause high voltage present but the screen is dark (blank), but for now I am going to talk about one of the causes.

Heater Circuit.
First be sure High voltage (HV) is present. This you can easily confirm by listening (hearing), I have pointed out elsewhere on my blog troubleshooting electronics using body senses like Sight, hearing, taste, smell and touch is allowed.

Thursday, September 22, 2016

Wednesday, September 14, 2016

How to install universal TVST59 (HDMI+AV+VGA+USB) Controller Driver Board Diy Kit for LCD/LED Screen Panel

A friend of mine called me to pass by his place to check out on his 22 inch LED TV.


I passed by and after powering the television I noticed that the power ON led was ON but RED in color.

Tuesday, September 6, 2016

Sony Trinitron CRT TV with dark spots on the screen

Dear Sirs,
Does your guide include information about this kind of Sony Trinitron?
CRT video problem as shown on the link below? Not sure where the
Problem is, but if you have the time could you please take a look a
Some screen pictures of the problem and more detailed description?