Question about Proton MM2701VT 27" TV
WHEN ITS ON THE POWER SECTION FUSE DAMAGED
It has a short ckt.please replace the STR and the H-out transistor for sure!
Posted on Nov 28, 2007
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Your unit is in standby
mode only and can't power up because there's faulty output voltages in the
power supply section. Most of the TV with the same symptom as what you've
stated has a bad filter electrolytic capacitor in the output of the power
supply section. It will dropped the voltage from normal and disable the unit.
Sometimes it has a physical indication of fault like bulged/dome at the top but
not all, you must have a capacitor checker to determine its condition.
Another caused was an
open fusible resistor(low resistance resistors) in line with the output of the
power supply section. It acts as a normal fuse to guard the supply from load
malfunction to avoid further damaged.
circuitry and EEPROM IC will do the same symptoms.
This symptoms needs a
technical skills to isolate where the fault came from. If you don't have
necessary tools and test instruments and can't troubleshoot the symptoms
yourself, I would advice you to look for an experienced technician to isolate
Also, check if your unit
is under warranty period/extended warranty, avail it because the manufacturer
will fix it for free. Don't attempt to open the back cover, it will void the
Hope I helped you.
Have a nice day!
Thanks for using Fixya.
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