Question about Samsung - Projection TV replacement lamp Projector Lamp
Samsung Model HL-R5067W will shut down intermittently and when restarted will come on and sometimes after a few minutes shut down again. Othe times when restarted it will run without a problem for several days. my hcn4226w/hcn436w keeps shutting down
A blown fuse is a very common type of fault due to poor design very often triggered by power surges due to outages or lightning storms. However, the most likely parts to short are easily tested, usually in-circuit, with an ohmmeter and then easily removed to confirm.
If the fuse really blows absolutely instantly with no indication that the circuits are functioning (no high pitched horizontal deflection whine (if your dog hides under the couch whenever the TV is turned on, deflection is probably working).) then this points to a short somewhere quite near the AC power input. The most common places would be:
Unplug the degauss coil as this will show up as a low resistance.
First, measure across the input to the main power rectifiers - it should not be that low. A reading of only a few ohms may mean a shorted rectifier or two or a shorted Posistor.
Posted on May 20, 2009
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Posted on Jan 02, 2017
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