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In the color TV repair "weld" is one of the most common fault, TV after used for a long time, especially some fever serious parts, solder the welding foot easily aging appear peeling phenomenon. According to our statistics, imported color TV use time weld failure accounted for 50%, in the repair televisions in more than 4 years as Hitachi, music, Sony, Toshiba sets the output IC, the output part, three terminal regulator IC, put some there are weld problem, fault but domestic TV produced weld is rare. What weld failure is not to repair veteran, but to repair the novice due to lack of experience and easy to cause the miscarriage of justice, the repair work in trouble.A4Fservice manual download site
Making making making TV such as faults appear, sometimes not, by the vibration fault automatically eliminate the phenomenon, which is mostly caused by the faulty, then we should first check the solder joint element large solder joint and its surrounding, some deposit found in the weld joint is relatively easy, some are more subtle, glass to use amplification observed. There are usually a lap weld thin black crack, some dark or even black, there is obvious difference with the surrounding normal joints. For these joints are our best welding treatment, eliminate hidden dangers. For longer service life of the TV (such as 5 years or more), regardless of the existence of weld problem, also the power supply, the output part and output part of field welding treatment, which will greatly reduce the TV failure.
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