Question about Televison & Video
SOURCE: Picture quality and sound
than the tuning coil of circuit,like 39mhz coil or other circuite related with I.F. and detection section coil or any p.f.will be damaged if it should b currect than replace the tuner
Posted on Mar 07, 2007
SOURCE: lcd tv screen has gone
1. A circuit board may crack about some of the larger
components mounted on it. You can inspect the PCB's for fractures, and then
repair them. It may also be poor soldering that has failed. I would be checking
for these things first.
2. If you want to go in for a long term solution, you can easily replace the whole power board or just change the faulty capacitors. You will have to open the back panel and take a look. You can make out which are faulty, because their caps will be swollen on top. Here's a sample pic (not same model):
Check the specifications of the faulty capacitors, and get the replacements from your local electronics shop. If you are comfortable with this, you can use a pair of needle nose pliers to G-E-N-T-L-Y pull out the defunct capacitors. Once that is done, solder in the new capacitors carefully. If are unsure how to do this, try to get a friend who knows how to do this kinda stuff do it for you, or get a qualified technician. Warning: If you do not have a background in electronics repair, or are inexperienced, get a qualified technician to do it for you.
REMEMBER there are very dangerous voltages inside a TV that can KILL. Be sure to work SAFE when dealing with electricity. DISCONNECT THE POWER BEFORE YOU DO ANYTHING.
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Posted on May 03, 2008
I reset the comcast cablebox. I totally unplugged the cablebox for 20 seconds and then plugged it back in. Turned on both the cablebox and the tv and the HDTV channels operated correctly.
Posted on Dec 09, 2008
If you are still getting Sound, then most likely the bulb has burned out, (If you have a Rear Projection set). If it is a flat panel LCD, then the problem could be the electronics that power the fluorescent bulbs in the back of the LCD panel. Those bulbs will last about 10 years or so, but the electronics, (like the balast & amplifier), could have died. Please check your Cust Service Manual that came with the set & look for your symptoms, and that should help. Either way, a qualified TV tech will need to check it out.
Posted on Jan 17, 2009
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