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Understanding on How Switch Mode Power Supply Works

 
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Understanding on How Switch Mode Power Supply WorksSome 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 supply. According to wikipedia: A switched-mode power... [ Continue reading... ]

Nov
12

Solution For All China Board TV Can’t Receive Any Channel Signal

 
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Solution For All China Board TV Can’t Receive Any Channel SignalThis is for all China Board TV that can't receive any channel signal but the tuner is good and you may not need to replace or reprogram your memory IC. All we need to do is to copy the settings on it. If you don't have the original remote controller of the unit, you can use the Universal Remote Controller Step 1 : set your remote to code 006 and press the 2 three times and the adjust menu will pop up.     Step 2 : If... [ Continue reading... ]

Aug
20

Repairing A DVD Player (No Display, Lights Only, No Buttons Functions)

 
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Repairing A DVD Player (No Display, Lights Only, No Buttons Functions)Repairing A DVD Player With Corrupted Firmware (No Display Lights Only, No Buttons Functions) Let me share to you this tutorial about repairing DVD player caused by corrupted firmware. Thanks to Ikasamoko of ELAB forum for sharing his knowledge on this topic. Problem: The DVD is on Half-Dead state, which means the power supply is OK all over the entire circuits, but no Display, Lights Only and No Response on Buttons or Remote... [ Continue reading... ]

Jun
17

Repairing A DEVANT LCD TV Auto Shut Off Problem

 
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Repairing A DEVANT LCD TV Auto Shut Off Problem   DEVANT LCD TV Model: 26DL29 Trouble : If you turned on the main switch, the red pilot light will light up and then the blue light but then shut off. All the power supply in the output of the chopper transformer are all gone after it shut off. THis kind of trouble is commonly caused by the electrolytic capacitors in the power section.   Culprit: A leaky Electrolytic Capacitor with a part number of C849 with a value... [ Continue reading... ]

Sep
29

Repairing A34JXV70X NEC TV With Picture Problem

 
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Repairing A34JXV70X NEC TV With Picture ProblemI got this post from a Gsmsandwich forum posted by jesse_25 so all credits goes to him I'm just sharing it here in the site for reference if ever we encounter this kind of problem. History of the unit : The owner of the tried to clean his unit but after the cleaning, when he turned on the unit, the problem arouse.         So the owner brought the unit to jesse_25 for repair and what he saw when he... [ Continue reading... ]

Sep
25

Huawei E5220-2 Corrupted Firmware Solution (Blinking) Globe Pocket Wifi

 
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Huawei E5220-2 Corrupted Firmware Solution (Blinking) Globe Pocket WifiI found this tutorial on Symbianize.com forum I am a member looking for the solution for the Pocket WiFi Blinking problem and found out it is caused by a corrupted firmware. This is the second time I have encounter this problem on my device. The first time I encounter this problem is solved by bringing the unit to the globe and have them repair it.         In this post I will teach you the solution on... [ Continue reading... ]

Sep
23

Samsung CRT Monitor Control Lock Always Flashing Problem and Solution

 
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Samsung CRT Monitor Control Lock Always Flashing Problem and SolutionIn this article, I wanna share to you our experience in repairing Control Lock Always Flashing Problem. We got this monitor from one of the office in the mall where I am working. It was a Samsung Syncmaster CRT Monitor model  551V with a problem of insufficient width and the menu is always pop up until it shows that it is locked, which looks like the menu switch is pressed for a long period of... [ Continue reading... ]

Oct
12

The Optoisolator IC (Error Amp) In Power Supply

 
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The Optoisolator IC (Error Amp) In Power SupplyIn this new article, we will now be talking about the use of the Optoisolator IC which is commonly used in the feedback circuit on a variety of power supplies that are autovolt on my opinion. Most power supplies like DVD players and Chargers that I have repair using an Optoisolator IC with a value of PIC817, this power supply is autovolt, which means it can be plugged either on a 220 volts or 110 volts supply source. According to Sirkevin,... [ Continue reading... ]

Feb
10

Basics in TV Repair Guide

 
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Basics in TV Repair GuideHere are some of the useful information that we must know if we want to learn about TV Repair, but before this, you must also have the knowledge about the electronics components and the symbols that we see when dealing a schematic diagrams and printed on the circuit boards. You must learn the basic functions of the Resistors, Diodes and other semiconductor components that are available on electronics circuits. For more information about the... [ Continue reading... ]

Feb
9
 
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