Re: Sharp LC-80LE757U - Click - shuts off
OK... but that was "examples" of things to look at... note the "strategic"... this means also some pins on "other components", etc such that you aren't really measuring a specific component but more a "path" or an "integrate circuit part".
Once you kind of have a "bench mark", then try heating the "old board" and do some similar measurements and see what / anything changes / jumps out at you. Similar you can freeze things and do that.
Further as others suggested, possibly a crack / poor solder so it will vital that you don't always directly measure at the component "pin" but at a place in a track that you can trace back to the component which then somewhat checks some poor path connections.
the "bench powering" testing that you may try to setup is also good but it depends on how much "support circuits" you need to rig up to get some form of "test bed". I suspect just "turning on" the board via power input and providing a couple of "states" (ie. ps-on, others) might not do much but maybe others will provide better "test bed experience".
Originally posted by jason123
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Once you kind of have a "bench mark", then try heating the "old board" and do some similar measurements and see what / anything changes / jumps out at you. Similar you can freeze things and do that.
Further as others suggested, possibly a crack / poor solder so it will vital that you don't always directly measure at the component "pin" but at a place in a track that you can trace back to the component which then somewhat checks some poor path connections.
the "bench powering" testing that you may try to setup is also good but it depends on how much "support circuits" you need to rig up to get some form of "test bed". I suspect just "turning on" the board via power input and providing a couple of "states" (ie. ps-on, others) might not do much but maybe others will provide better "test bed experience".
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