My sd-p50a3 is turning off by itself and i can figure out why. i call an expert and they said it was the power source. i will turn back on every once and a while, please help!!!
I believe they're right, it sound like you have intermittant connections on the Power/Deflection board (not uncommon with projection tv's over five years old.
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There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you these erratic shut downs or poor performance. The best way to check for loose connections is to tap lightly when the set is powered on, if there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, and use a good soldering iron to solder all suspected points. Sometimes the fault occurs when the set warms up; if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault. It can also be related to WEAK ELECTROLYTIC capacitors as the value can reduce in time. Based on the above method you must be able to locate the area of fault and solder the sections.
ok sir you have defective power supply at hot side section! and the
power oscillstion circuit! your unit need to diagnos to know the exact
defective parts!
Remove solder from regulator output pins (on
convergence pcb),clean and resolder.Practice
visual acuity technique=solder any/all bad
connections.Hire a pro,if need be.
same problem does anyone have a service manual?
same problem does anyone have a service manual?
standby bottum is not turning the tv on
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