If you are looking for COF Data this is what I get, I hope it will help you a little. I used this data while repairing the screen I have that is missing VGL supply on the sidepads and the display is in slow... [ Continue reading... ]
![Pisonet DIY: How to Adjust Allan Pisonet Timer Howto/Tutorial [Tagalog]]( https://i1.wp.com/ronelex.com/images/uploads/2019/06/iphone.png?resize=100%2C100)
Decimal || Binary = Timer
0 || 00000000 = 1 min ok
1 || 10000000 = 2 mins ok
2 || 01000000 = 3 mins ok
3 || 11000000 = 4 mins ok
4 || 00100000 = 5 mins ok
5 || 10100000 = 6 mins ok
6 || 11000000 = 7 mins
7 || 11100000 = 8 mins ok
8 || 10000000 = 9 mins x
9 || 10010000 = 10 mins ok
10 || 10100000 = 11 mins
11 || 10110000 = 12 mins
12 || 11000000 = 13 mins
13 || 11010000 = 14 mins
14 || 11100000 = 15 mins
15 || 11110000 = 16 mins
19 || 10001100 =... [ Continue reading... ]
In this post, I will show you the Basic Parts And Sections in the Board of a CRT Television Set. You will learn the functions of each sections in a television set.
Here are the List of the Parts and Sections of a CRT Television set :
1] Speaker
2] Yoke
3] Video Amplifier
4] CRT Socket
5] High Voltage Section
6] Bridge Diode
7] Regulator
8] Audio Amp [green square] Audio Section
9] Tuner
10] Flyback
11] Chopper
12] EEPROM [ Memory IC]
13]... [ Continue reading... ]
This method should work on any laptop make. I do not take any responsibility if you damage your board. This video is only for reference on how to clear/bypass security settings. For those who looking for EEPROM location for Lenovo computer, copy and paste this web page: ja.axxs.net/eeprom_location.htm
Here are the instruction on how to do it but remember do it at your own risks.
1. Power on laptop.
2. When display comes on,... [ Continue reading... ]
Ronelex Electronics/Biasing Current of an Output Transistor
In this article, we will be focused on getting the bias current of an output transistor of an amplifier circuit. According to wikipedia:
Biasing in electronics is the method of establishing predetermined voltages or currents at various points of an electronic circuit to set an appropriate operating point. The operating point of a device, also known as bias point, quiescent point, or... [ Continue reading... ]
Ronelex Electronics Repair/ Laptop BIOS or NOVO Button Problem
I got trouble in formatting and setting time of the Lenovo Ideapads unit that I repair. I can't enter bios by just pressing F2 and I can't find the NOVO Button until I find this guide on Youtube.Com which helps me to solve my problem :). Just watch the video and learn how to access the BIOS of Lenovo Ideapad Laptop Models.
For more Electronics Repair/ Troubleshooting Guide,... [ Continue reading... ]
Ronelex Electronics/ Coin Based Water Dispenser System
In this Fully Automated Coin Based Water Dispenser System, it is using a microcontroller and a sensor. In the picture below it shows the sequence on how the system works. The system is using Infrared sensors which is used to detect the presence of the glass and the sensor give the signal to the controlling system to check if the glass is placed and if the glass is in position, it starts... [ Continue reading... ]
Ronelex Electronics/Automatic Tubig Machine
Coin Operated Water Dispenser aka Automatic Tubig Machine(ATM) Sample Video
This is a Coin Operated Water Dispenser Example by chad which is known by many as Automatic Tubig Machine(ATM) sample video on how it works. I hope you learn something on this video can be use as a guide.
For more Electronics Repair and troubleshooting guide, please click here.
You can also visit our Facebook... [ Continue reading... ]
Ronelex Electronics/Switch Mode Power Supply
Some of us like technician want to learn more about the Switch Mode Power Supply commonly called SMPS. This is a special type of power that uses a chopper transformer instead of an ordinary metal core transformer. We have to learn how this type of power supply works for us to have knowledge on how to repair this switch mode power supply if we will encounters problem related to power... [ Continue reading... ]
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