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FISHER MODEL PC-5020 TELEVISION

LOUD CRACKLING NOISE-PICTURE WORKS-SOUNDS LIKE IT IS COMING FROM BLUE RECTANGULAR ITEM ON BOARD

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My dell pc fan make a loud noice


There are 13 possible noise on hardware issues
1) Power supply crackling sound
2) Fan sound that sounds like a motor noise dragging
3) Harddisk clicking sound
4) CD rom spinning sound
5) Modem noise pinging sound
6) Application software resident in memory
7) Technician Neighbour drilling holes from your ceiling to do
special wirings late at night, installing transformers
8) Ceiling fan with unstable modified electricity makes noise
on motor issue
9) Sound that comes from switchboxes and transformer
upstairs lighting up free electricity from your fan wires
in your apartment unknown to you tapped by upstairs
residents
10) Voltage regulator malfunction noise issue
11) Monitor crackling sound issue
12) Wirings crackling sound issues
13) Power socket crackling sound issues

Be sure you know where the source comes from, call PC vendor if you are uncertain, you will have to dismantle your
hardware device in vendor's place to find out. Vendor will test one by one.

If computer fan is your issue, it is just a small issue
there are many replacement at PC vendors based on quality
corresponding to the price you pay

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Look for Bad Capacitors on power supply board, they will be vented or swollen on Top.

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1 Answer

Tv won't turn on. tv made a loud noise and picture went funny.When we tried to plug it later,it just kept making a crackling noise.Does it sound like something that can be fixed?


Power supply is blown. Google it, check ebay (with tv model name) or just part it out and get a new one. You can also buy these used for really cheap off of craigslist.org

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It could be the inverter board going bad. The inverter board is what makes the back lights come on and has transformers on it that have high voltage. any time you have a noise like a buzzing or arcing you should have it checked

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sounds like high voltage arcing,/flyback,focus block,h.v. anode lead etc.

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Your only solution is to change the sound to mono. Eventually the power supply will go and the tv won't work.

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