Question about Samsung DLP HL-P5663W 56" TV

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High pitched whine when the motor starts

When the TV is turned on, you can hear the motor/fans start and then a high pitched whine gets going. It was soft at first and went away for a while. It is back with a vengance and louder than ever. You cannot even hear what is on the TV.

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  • sguiscreen Aug 12, 2008

    Yes. Exact same problem. I have to crank up volume on the TV and my surround sound to blot it out. It is irritating, because it eventually goes away after an hour and a half or so.

  • dybrownstein Aug 27, 2008

    Same problem here. It used to get softer after watching a bit, and you barely knew it was there there. Now it is so loud that you can't enjoyably watch anything. The actual sound and picture are perfectly fine. My model is HLN4365WX/XAA. Some repair dude charged me $100 to tell me it was the lamp, but I'm wary of purchasing a new one because I don't know if that makes any sense.

  • reneshiloh Aug 28, 2008

    having the same problem with a loud high pitch whine thats starts about 5 minutes after tv is turned on. Have not been able to correct.

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Had the same problem. It quit within about 5 seconds after turning the TV off. Replaced the color wheel and the whine is gone. The picture also looks brighter, which may be due to dusting the projection lens with lens-cleaning compressed air (from a can). The color wheel was about $100 from Samsung parts and it took less than 3 hours to replace. See http://www.jangro.com/a/2006/07/24/samsung-dlp-replace-color-wheel/ for good info, and be sure to read the cautions.

Posted on Aug 30, 2008

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No Picture or sound


Hello,

The screen is blank with no raster at all. There are indications that the channel numbers are changing in the display. This indicates that some of the low voltages are present but these may be derived from the standby supply.

Assuming there is no deflection and no HV, you either have a low voltage power supply problem, bad startup circuit, or bad horizontal output transistor (HOT) or other bad parts in the horizontal deflection.

Check for bad fuses.

(If you have HV as indicated by static electricity on the front of the screen and you hear the high pitched whine of the horizontal deflection when it is turned on, then the following does not apply).

Use an ohmmeter to test the HOT for shorts. If it is bad, look for open fusable resistors or other fuses you did not catch.

Assuming it is good, measure the voltage on the collector-emitter of the HOT (this is safe if there is no deflection). You should see the B+ - probably between 100 and 150 V.

If there is no voltage, you have a low voltage power supply problem and/or you have not found all the bad/open parts.

If there is voltage and no deflection (no high pitched whine and no HV), you probably have a startup problem - all TVs need some kind of circuit to kick start the horizontal deflection until the auxiliary power outputs of the flyback are available. Some Zeniths use a simple multivibrator for this - a couple of transistors. Others power the horizontal osc. IC from a special line-derived voltage. The multivibrator type are sometimes designed to fail if someone keeps turning the set on and off (like kids playing) since the power rating is inadequate.

Test the transistors if it is that type with an ohmmeter. If one is shorted, you have a problem. The usual way a TV service person would test for startup problems is to inject a signal to the base of the HOT of about 15.75 kHz. If the TV then starts and runs once this signal is removed, the diagnosis is confirmed. This is risky - you can blow things up if not careful (including yourself). See the section: Bypassing the Startup Circuit for details.

If you hear the high pitched whine of the deflection and/or feel some static on the scree, confirm that the horizontal deflection and high voltage are working by adjusting the SCREEN control (probably on the flyback). If you can get a raster then your problem is probably in the video or chroma circuits, not the deflection or high voltage.
Good luck...

May 29, 2010 | Sony KV-32HS20 32" TV

2 Answers

My Samsung DLP is making a loud humming noise


Most likely if you are hearing a fan like noise from this DLP it is not the fan.

These sets use a replaceable color wheel that before it fails makes either a high pitched whine or a fan like sound.

Part is usually customer replaceable and there are free written instructions and video instructions on YouTube for most models.

SD TECH33096fb.jpg

Feb 02, 2010 | Samsung DLP HL-P5663W 56" TV

1 Answer

Makes a high pitch "chirping" sound when I try to turn it on


if its a hi pitched whine it could be the horizontal output xfmr make sure all solder joints around the xfmr are solid and the xfmr mounts are tight it sounds as if your hearing the 15,750 hz. horiz. signal

Sep 17, 2009 | RCA F36650 36" TV

1 Answer

RCA F32650 production May 2003. Was working fine. Turned it on the next day, got no picture and a high pitched whining noise.  Please let me know what I should do to fix it.


If it weren't for the high pitch whining noise. I would say it probably is an internal fuse inside the chasis. It is rated at 1.5 to 2.0 amps. With the whining noise it sounds like a trouble shooting bench
job. Problems occur when a electrical/electronics device is turned on and turned off. Inrush voltage,
when it is turned on, can go up to three times more than normal. This also happens at turn off. Solid state components usually fail at this time. I don't feel that this is a problem that can be fixed in the home.---BBB

Jan 25, 2009 | RCA F32650 32" TV

1 Answer

Rca 27410tyx1 will not shut off


Sounds like trouble in the standby/power up circuit. have you tried unplugging the TV for a half hour and seeing what happens? It might start up but I think this problem won't go away. If you heard a high pitched buzzing it sounds like a problem in the high voltage not letting the start up circuit work. threy are related. The start up circuit waits for the high voltage to stablize and then switches it on.

Sep 16, 2008 | RCA TruFlat 27F520T 27" TV

2 Answers

High pich whine from CT-36D32 36" TV


jdosk-the high pitch noise you hear is generally from the horizontal output being shorted,the horizontal output is usually near the flyback transformer,get a digital multimeter to checkthis part.Let me know I'll try to help. cooltek Feb.16/08

Feb 05, 2008 | Panasonic CT-36D32 36" TV

1 Answer

27 inch tube tv won't stay on


You have a problem is in your horizontal section which also is part of your power supply. The high pitched whine is from the Intergrated High voltage transformer (also called the flyback transformer). This sound occurs when the freuency of the transformer changes and or the voltage gets too high. The click occurs as a result of the drawing of excessive current by the HOT Horizontal output transistor. This is repairable, but requires the correct equipment and a schematic.

Sep 19, 2007 | Philips Magnavox 27MS343S 27" TV

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TV will not turn on.


A high pitched whine is most of the time the power supply trying to run, but it is being loaded down from a short somewheres in the set. Sometimes a resistor on the CRT board will open and make the set shut down right after start up, sometimes the horizontal output transistor causes this problem, almost any circuit for that matter can cause this problem. Good Luck

Jun 14, 2007 | Philips TP3681C 36" TV

1 Answer

TV won't stay turned on, no picture, started making high pitched noise


That high pitched noise you're hearing is the power supply telling you that it has too much of a load on it and lowered its operating frequency which in effect cuts its output way down! Normally you don't hear any thing since the power supply operates at a frequency that's beyond human hearing. In an RCA this indicates more than likely that your horizontal output transistor is shorted and this short was caused by the flyback transformer shorting. This is a common happening with RCA's You'd need to take to a tv shop and have it checked out. Stargazer

Jan 28, 2007 | RCA F27650 27" TV

1 Answer

Occasional 'whistling/whining' from back of TV


I wonder if there is enough air circulating around your equipment?? My DVD recorder makes a sound unless I open the doors on the cabinet that contains all of my equipment. The cable company says it is a fan to cool down the units.

Jan 30, 2007 | Bush WS6671 28" TV

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