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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Posted to sci.electronics.repair
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"John-Del" wrote in message
... Okay, one more. True story... This wasn't so much a difficult repair as it was the circumstance. 1980, hot summer day and my new girlfriend (who would be my wife) is having her HS graduation party when her parent's early 70s tube Magnavox console blacks out in a cloud of smoke leaving a clean horiz line. I was 21 at the time and looked younger, but of course being a TV tech I was asked to look at it. I pulled the chassis out and the area around the vert centering control was pitch black. That and the cigarette smoke and wood stove deposits made seeing what else was burned nearly impossible. I borrowed the garden hose and a bottle of Fantastik (TM) and soaked the bottom of the chassis and rinsed so it sparkled, then left it out front in the hot sun. Later in the afternoon I put in two 10 ohm 5W resistors in place of the vert cent control and put it together, touched up the height and lin and it worked fine for a few more years. When my father in law tells the story, he said that when he saw me hosing out the TV guts in the front yard he was thinking "oh sh$t I'm going to have to buy a new TV tomorrow". Same thing happened to my younger brother when our family was visiting the family of the older brother's wife. Zenith TV died. My younger brother, who was either still in tech school or early in his career, tore the set down to bits and pieces right there on the living room floor, puzzled over it a bit, the light came on, ran down to the Zenith distributor, picked up a part, got back over there and finished the repair. Two families (not to mention the two brothers) were sweating bullets on that one. Mark Z. |
#2
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John-Del wrote: "When my father in law tells the story, he said that when he saw me hosing out the TV guts in the
front yard he was thinking "oh sh$t I'm going to have to buy a new TV tomorrow". Good story with happy ending! Nowadays most folks won't let me adjust their PICTURE menus for them, let alone go component level. Sets are so reliable today, with consistent image quality, yet people wonder why they burn out after only 3-5 years. Backlit TVs(LCD, LED) require a backlight to be seen, and very often this setting, along with the others, are left in factory/showroom mode, shortening the life of the appliance. Getting set owners to understand this basic fact, along with the benefits of correct setting of the basic adjustments(brightness, contrast, color, etc), is well-nigh impossible! A $300 full calibration is often not necessary to achieve these goals. |
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