Question about Philips 60PW9363 60" Rear Projection Television

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It has an electric arc in the back an makes a cracking noise

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The high voltage runs the picture tubes. you have a bad high voltage transformer (large signal board) or something wrong with the anode wires (big red ones) or could be a bad tube. this has 30,000 volts so be careful or call a Pro.

Posted on Sep 09, 2010

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When turned on and sometimes when turned off, why does it make a loud crack or arcing noise?


Usually, this problem is seen on CRT sets, not flat panels. Nut sometimes the category description here is wrong, so I will go on in general terms regardless. The crack is usually an electrical arc. CRT televisions have a high voltage section that supplies various voltages to the picture tube. When the set is operating these voltages have a place to go. When you power on and off, there is a short period of time when the potentials have no where to go until all the remaining circuits power up. This can cause arcing. There are safeguards in place to prevent this, but there are two things that can occur to bring on this issue. The first, and most common, is dust and dirt. Electronics are a dust magnet. Over time, dust and dirt collect on the circuit boards. This can break down the dielectric resistance and allow current to jump from one place to another (arcing). The other issue is that is the bleeder circuit that allows the high voltage to drain off after power has been removes malfunctions, then the high voltage takes longer to drain off since it has to find other paths to dissipate. This can result in an arc as well. I would have someone who is knowledgeable open and clean the interior of the device first to see if that alleviates the problem.

Dec 10, 2015 | Hitachi Televison & Video

1 Answer

Hello, I have 7 no. of Philips 105G7 CRT monitors purchased in 2006. 4 of them are working fine but three of them started failing one by one since a year. First was in July last year and the recent one was...


The cracking problem is probably high voltage arcing inside the monitor due to insulation breakdown or components breaking down or dust and moisture causing arcing. I suggest you dispose of these monitors, they could pose a fire risk. Instead of trying to repair them. Do not try to repair the monitors yourself, there are dangerous high voltages inside these crt monitors.
I suggest you put your money towards a LCD monitor, these are fairly cheap and very energy efficient.

Aug 29, 2010 | Philips Computers & Internet

1 Answer

My RCA projection tv makes a loud buzzing, humming noise. Does as soon as turned on even before picture comes on, does not stop till tv is turned off.


buzzing noise is cause by small electrical arc inside the unit or a problem in your audio circuit.if you can open the unit up and check if its an electrical arc.

Jun 21, 2009 | RCA HD52W59 HDTV Projection Television

1 Answer

Tv turns it self off after only 2-3 seconds and makes crack noise


Since the set is less than 1 year old, it should still be under warranty. Request warranty service.

The noise you are hearing is probably arcing inside the set on the power supply board. Continuing to attempt to turn on the set will only make things worse. Please request warranty service as this is unusual for a TV that new.

Dan

Jan 16, 2009 | LG 50PB4D 50 in. Plasma HDTV

1 Answer

Cr anks won't start when wet out


The ignition coil wis defective, possible crack in the coil case. When it is wet, the coil case becomes wet, and the electricity shorts (arcs) to the coil frame. Hence, no electricity will flow into the distributor, or plugs, etc... When it is dry, it is harder for it to short to ground, so the cracked coil will work (somewhat). To check for this, try the following when it won't start. Lift your engine cover off and locate the coil. Make sure the wire (coil to the distributor) is firmly connected at both ends. Turn the key and watch the coil. If you see blue-white electrical arcing, you have a bad coil.

Dec 29, 2008 | 1995 Lincoln Town Car

1 Answer

Whirlpool Side By Side GD5RHAXNQ00-Electrical Issue


The arcing noise is just that, a loose connection causing electricity to arc from one place to another. this is initiated by opening the door and closing the light switch. The small glow is from a small amount of voltage reaching the bulb. If you are inclined, repair it. remove the cover, look for the burnt wire or connection. If its a removable part, replace it. If not clean it up and/or make a new connection. One thing is for sure, it will not get any better and may get worse and burn up something more critical.

Jan 07, 2008 | Whirlpool GS6NBEXR Side by Side...

2 Answers

Cracking Noise


sounds like high voltage arcing.

Oct 07, 2007 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Panasonic PT-53WX54 What is that popping noise?


A loud popping noise, like a sharp "snap!", is usually caused by high voltage arcing. Somewhere in the high voltage system an insulator may be cracked or loose, such as the plastic around the flyback transformer or one of the rubber cups on a picture tube. When the high voltage arcs, it momentarily drops and the picture could go out for a split second. High voltage is dangerous in projection sets so allow a qualified tech to service it for you.

Sep 07, 2007 | Panasonic PT-53WX54 53" Rear Projection...

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