February 10th, 2009 No Comments »
Viewsonic Monitor Problems-CRT or The Degaussing Circuit?
This Viewsonic 15” Monitor came in with the complaint of color problem in the whole display. Some techs called it as rainbow display while some referred to it as color patches fault. This problem usually were related to a bad picture tube (due to a fall that caused the internal shadow mask to come out from the original location) or from a faulty degaussing circuit. Continue reading »
Popularity: 7% [?]
February 10th, 2009 No Comments »
Monitor Color Problem-LG 710E Monitor With A Missing Blue Color
If you think that electronic repair is very difficult to learn then you have to read this article where only by using a solder gun could solve a Monitor problem. Of course there were many tough dog cases (very difficult to find out the fault) in electronic repair but at the same time there were also many cases that can be solve by some simple ways.
This LG 710E LG Monitor came in with no blue color problem. How do I know if the blue color was missing? Simply run a color test (that you may also download from the internet) or from a Monitor testing program generator, you could clearly see as which of the color is missing when you run the color bar test.
Continue reading »
Popularity: 7% [?]
February 10th, 2009 2 Comments »
Dell 17″ (Likom L705XXX) Monitor With No Power Symptom
This DELL 17” Monitor (Made in Malaysia under LIKOM model L705XXX, product no: L7055LP) came in with no power symptom. Normally after opening up the cover I would look at the power supply (primary side) for any burnt and cracked components first. If there are darkened area and burnt components, I would tell myself that this Monitor needs a little more time to repair it. If it is not (component’s intact) I would usually begin to discharge the filter capacitor and start checking the fuse. Continue reading »
Popularity: 8% [?]
February 10th, 2009 4 Comments »
Computer Monitor Display Problems Caused By A Defective Screen Grid Voltage (G2) Capacitor
Computer Monitor display problems such as no display with high voltage symptom can be caused by many reasons. A defective picture tube, a faulty video preamplifier IC, a missing heater voltage, torn signal cable, negative G1 voltage became too high (-120 volt and above), CRT board problems, a missing or low G2 voltage and etc could cause no display but with the present of high voltage.
Continue reading »
Popularity: 5% [?]
February 10th, 2009 No Comments »
All cathode ray tube monitor (crt) have a sticker sticked on its crt coating. Those words or characters printed on the sticker are the type number of the picture tube. All cathode rays tubes, whether a monochrome (black and white) or colour crt are identified by a specific code consisting of numbers and letters. The cathode ray tube monitors codes are different from each other because different picture tubes have different characteristics. Television codes are more or less the same as the monitor codes.
For instance, most color monitor cathode ray tube has the designation code such as the M36AFA63X03. There are six meaning (parts) M/36/AFA/63/X/03 in these codes as explain below: Continue reading »
Popularity: 3% [?]
February 10th, 2009 No Comments »
Intermittent no power was the complaint of this Epson lx 300 printer. As usual, the main suspect was the power on/off switch. After removing the power board from the printer, I could clearly see a dry joint at the pin of the switch mode power transformer. This was the caused of the printer problem. There was no other loose connection or dry joints on the other part. Continue reading »
Popularity: 3% [?]
February 10th, 2009 No Comments »
If the complaint for NEC P8000 printer was a missing line across the printout, immediately we will suspect the printer head or the ribbon or even sometime the ribbon mask. Among so many brand of dot matrix printer, only this model have one common fault which is the printer head and the printer driver ic’s spoilt.
Continue reading »
Popularity: 3% [?]
February 10th, 2009 No Comments »
Recently my company D-link Ethernet broadband router broke down and I can’t access the internet. The problem was no power but there was 5 volts output from the power adapter, so this proof that the router itself not working. As usual we as electronic repairer do not buy any new equipment unless we have inspected the equipment our self. If we found that the equipment is beyond repair such as lightning strike or no spare parts then only we give up and buy a new unit. Continue reading »
Popularity: 3% [?]
February 10th, 2009 No Comments »
If you already owned electronic repair shop and wish to expand your business to become an Authorized Service Center for certain companies, then you may have to consider some changes in your electronic repair shop. If you could secure a deal as one of the authorized service center, your company are sure to have plenty of work to do and a secure future.
Whatever new model of equipment that comes to your place for repair, you will be provided parts and schematic diagram too. You can take this opportunity to learn the new circuit or designed for the particular equipment. In other words, you are getting the most up-to-date information for the equipment you are contract with.
Once you got hold of the equipment repair secrets, you can then apply the knowledge on other type of equipment that comes across your repair bench. Just take this scenario for example, if you are the authorized service center for a company that deals with LCD Monitor, whatever knowledge you learn from the Monitor LCD repair can be apply to LCD TV repair. This will truly widen your knowledge and you are not bound for LCD monitor repair only.
Setting up your electronic repair shop to become an authorized service centre is not an easy task. Your electronic repair shops needs to meet the company or manufacturers’ criteria or requirement first before they can appoint your repair company as an Authorized Service Center.
They must set some guidelines because your company represents their image. If there is any part in your company that makes the customers not happy, their good image or brand name may be tarnished as well. Continue reading »
Popularity: 1% [?]
February 1st, 2009 No Comments »
While working in the system, you might see the dial-up connection dialog coming up automatically. This is caused by some application which is trying to connect to the internet. The exact application is unknown. Most applications are configured/designed to check for updates automatically by contacting home. Some applications notify the user before contacting their servers, most don’t. This may be caused by parasites as well. Adware contact their servers to fetch Ads and some Trojan may even send out your valuable information.
Continue reading »
Popularity: 2% [?]
Recent Comments