No Sound problem was with the convergence replaced the STK392-110 chips fixed the convergence and now has no sound I checked all the connectors on the chassis did not find any loose ones any one have this problem before ?

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317 Answers

Check the solder side of the speaker plug. john

Posted on Sep 12, 2007

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on the older sets it is a short and usually in the convergence circuit, the way to know is located the convergence chips and unsolder both from the board (18 pins each) and if set then comes on (WILL LOOK BAD) one of the two chips is bad and both need to be replaced----should be stk-392=110 chips.

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Hi jblake4900,

First, please double check if the part/board no. (SSR-9010A-M2) is the same as the original one. If yes, then other parts gone bad also aside from the power supply board. This is caused by faulty convergence chips (STK394-250) on the deflection board (part no. SSR-2510A-M2). Your unit used two convergence chips that is mounted on the large aluminum heat sink behind the flyback transformer.
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Let the unit unplug from the outlet at least 1 hour to drain the voltages from the power supply board. Familiarize all connectors (take a picture of it if necessary to guide you replacing the connectors).

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I’m happy to help further over the phone at https://www.6ya.com/expert/dewayne_4a10eab6caecdb92

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