Question about Sansui Televison & Video
Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
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Posted on Apr 11, 2015
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Posted on Jan 02, 2017
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My Answer to you> Sound..No Picture? First off...the device or appliance has two separate functions that do not totally unite with one another. True Picture and Sound need to be in Synchronization with each other; but each are independent form each other, as far as circuitry is concerned. Thus; you can have a perfect Picture (VIDEO) and no sound, or visa versa. If the VIDEO is not working, then problems with the video controller exist and this is related to the Picture Control function only. Circuit boards with electronic parts are assembled in a precise order with certain values and purposes. If for any reason one of these components fail the entire Video procedure goes crazy and does strange things. You cannot physically repair the board, and even professional technicians have difficulty doing so. Replacement is the only way to go, or purchase a whole new product.
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