Is this hum curable?

chakka35 | 16:26 Fri 13th Jul 2012 | Technology

3 Answers

My TV (fed from a PVR) has suddenly started producing a hum - sounds like a mains hum - behind the sound.
This hum is dependent on the picture: a bright screen produces the loudest hum; with a darker picture the hum reduces and a blank screen produces none at all.

Any ideas or help welcome.

Panasonic DMR-EX75 DVD recorder

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ChuckFickens

Check all the connecting cables are pushed in properly.

modeller

Can you control the sound on the PVR and also on the TV ? If so turn the sound up on the PVR and down on the TV . Hum is mainly generated on the TV therefore this method should cure your trouble.

chakka35

Question Author

Thanks, ChuckFickens, that wasn't it, but it's a good idea to check cables occasionally anyway.

modeller, you cracked it! I turned down the sound on the TV remote control and turned it up on the PVR RC and the hum disappeared completely. Very grateful to you.

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