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Noisy phillips TV model tr 2503 c121

My phillips tv makes a constant, low level buzzing or humming noise, any ideas what imay be the cause?

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Re: noisy phillips TV model tr 2503 c121

Mine does this too, just bought it yesterday and noticed the sound this morning, I guess because the house was quiet, now it's the most annoying noise ever. I have been searching for solutions all day, one forum said to go to the picture settings and turn the light sensor to "OFF"...Haven't gotten home to try it yet, but I hope this helps BOTH of us!

Posted on Feb 15, 2010

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5 year old synphonic 37 inch (regular) TV has recently started making humming/buzzing sound similar to when reception is weak (picture is clear). TV is connected to cable and none of other TV's have...

Open the cabinet of the tv,on the FBT,the big black block of plastic with a red wire with a cap to the CRT tv tube.Near the base of that big black block of plastic have a 3' steel rot on the block,glue that with some super glue,will solften the noise alot or stop it all together

Mar 08, 2010 | Standard (CRT) Televisions

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My samsung dlp has a loud buzz/hum noise when it comes on and them remains though somewhat less loud

The buzz can be the color wheel or one of the cooling fans going bad. The only other thing that could cause a buzz would be the ballast going bad. Call a local repair shop to further diagnose the problem

Dec 28, 2009 | Samsung DLP HL-P5663W 56" TV

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I have a Phillips PC7225 C121 ..I programmed it to a universal remote and went to menue.. it says Barker, Channel, Firmware ..I put it on channel but cant get to do anything after that...what do I do... I...

I need to add channel 66 to this tv and it only goes to channel 60.- the remote or the tv.?.
if remote doit mannuly on the tv.
if tv. .............................

Aug 06, 2009 | Standard (CRT) Televisions

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Reference to Phillips Magnovox Model PR1302 C121.

turn on tv,it turns back off,without lighting screen.

May 04, 2009 | Philips Magnavox 27MS343S 27" TV

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Toshiba 36zp18q buzzing noise.

Humming sounds come from the power supply and buzzing sounds come from other circuitry. Most likely a capacitor somewhere.

Feb 18, 2009 | Toshiba 36A40 36" TV

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Quasar 1989 tv makes a buzzing motor sound

Hi and welcome to FixYa,

Initially, if you have confirmed that the source of the buzzing sound is from inside the TV, then that would indicate a component about to fail or would need attention. Let us try process of elimination:
  • tuner - most unlikely, the tuner is responsible for selecting the channel. No component/part of the tuner could make such a mechanical buzzing sound;
  • speaker(s) - most unlikely, the speaker could have a buzz but generally would not affect the video nor cause snow (weak TV signals);
  • transformer - a strong possibility although without knowing the exact model, at most generic ideas; power transformer, flyback transformer, horizontal drive transformer (unlikely);
  • arcing - another strong possibility. This could be caused by damp, dusty surroundings of the components especially at the FBT area. Another area that could have adverse effect when dusty/damp would be the anode cap.
This of course would require a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings. Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

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1 Answer

Sony 2167 No power on

I have not worked on your particular model. But, I have serviced many TV sets over the years. My answer will ge generic.

Check all the capacitors in the horizontal output stage and power supply areas for high ESR. All the caps that are out of spec must be changed.

The high voltage multiplier & flyback can also cause the fault you are having.

You have to consider that the DC voltages are not the only important spec that has to be met. There are also many power drive signals that work with reactive devices. If there is any defect in the critical areas there will be failures.

Jerry G.

Nov 26, 2008 | Sony FD Trinitron WEGA KV-21CL10 21" TV

4 Answers


Confirmation: Lee2fixit's solution also worked on a Sanyo 19" TV Model DS19580with 'buzzing relay'. Chassis carriessimilar relay (Type DG1U 12VDC II TV-5 8A 250V~ also by DEC) at location RL601and a 25VDC 470uF electrolytic cap at C622. After confirming the relay was sound and finding no obviously faultedcomponents tied to it, replaced the cap. Bingo, normal operation and a quiet relay. Will post a follow-up ONLY if the fix failsbefore the rest of the TV .. it's almost10 years old after all. Thank youLee2fixit and

Jul 05, 2008 | Standard (CRT) Televisions

1 Answer

Buzzing sound

You haven't specified where the buzzing sound is coming from, if it is coming from speakers, changing capacitors in the audio section will fix the problem, especially the filters. Now if it sounds like a hissing sound from back of the tv, the CRT base socket is the culprit. It is an easy thing to fix, and the base is cheap, but make sure you purchase the exact same type of base or it will harm the CRT. Good luck.

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