KE-P61MRX1 - Sony TV Service Manual (repair manual). Page 19

The TV fan noise gets louder.

• The ventilation holes can accumulate dust over a period of time. 

The accumulated dust may make the cooling function of the built-
in fan less effective. To prevent this, we recommend removing the 
dust periodically (once a month) using a vacuum cleaner.

• If the item you want to select appears in a pale colour, you cannot 

select it.

The TV cabinet creaks.

• Changes in room temperature sometimes causes the TV cabinet to 

expand or contract, which can make slight noises. This does not 
indicate a malfunction.

The TV whirs.

• The TV’s fan setting is working. This does not indicate a 

malfunction.

The TV ticks.

• An electrical circuit inside the TV is activated when the TV is 

turned on. This does not indicate a malfunction.

The TV buzzes.

• There might be a surge sound when turning on the TV. This does 

not indicate a malfunction.

Remote control does not function.

v

, 

V

, 

B

 and 

b

 buttons do not work in PAP 

mode.

• Check that the Media Selector on the remote control is set correctly 

for the device you are using (VCR, TV, DVD or AUX).

• If the remote control does not operate the VCR or DVD even when 

the Media Selector has been set correctly, enter the necessary code 
set as explained in “Remote Control Configuration for VCR or 
DVD” on page 47.

• Replace the batteries.

•  PAP navigation is only possible in TV mode, please check that 

Media Selector is set to TV.

• Contact your nearest Sony service centre.

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If the NO SYNC message appears on the 
screen or if the   (power on/standby) 
indicator lights up in yellow

• Check that the video signal cable is properly connected and all 

plugs are firmly seated in their sockets.

• Check that the 15-Dsub video input connector’s pins are not bent 

or pushed in. 

Problems caused by the connected computer
• The computer is in power saving mode. Try pressing any key on 

the computer keyboard.

• Check that the computer’s power is “on.”
• Check that the graphic board is completely seated in the proper bus 

slot.

If the OUT OF RANGE message appears 
on the screen

Problems caused by the connected computer
• Check that the video frequency range is within that specified for 

the monitor. If you replaced an old monitor with this TV, reconnect 
the old monitor and adjust the frequency range to the following: 
Horizontal: 15.6 – 90 kHz
Vertical: 48 – 85 Hz

If using Windows

®

*

If using a Macintosh** system

• If you replaced an old monitor with this TV, reconnect the old 

monitor and do the following. Select 640 x 480 resolution at 60Hz 
for Windows using the Windows device selection screen. 

• When connecting a Macintosh computer, use an adapter (not 

supplied) if necessary. Connect the adapter to the computer before 
connecting the video signal cable.

• Using the menu system, select “Adjust Pixel” option in the “Screen 

Control” menu and adjust “Dot phase” or “Total H Pixel” 
(page 28).

• Try connecting the TV to a different mains socket, preferably on a 

different circuit.

Problems caused by the connected computer
• Check your graphic board manual for the proper TV setting.
• Confirm that the graphic mode and the frequency of the input 

signal are supported by this TV (page 55). Even if the frequency is 
within the proper range, some graphics boards may have a sync 
pulse that is too narrow for the TV to sync correctly.

• Adjust the computer’s refresh rate (vertical frequency) to obtain 

the best possible picture.

• Using the menu system, adjust “Brightness” and “Contrast” in the 

“Picture adjustment” menu (page 22).

• Using the menu system, select “Adjust Pixel” option in the “Screen 

Control” menu and adjust “Dot phase” or “Total H Pixel” (page  
28).

Problems caused by the connected computer
• If the resolution is more than the numerical value specified in 

“Technical Specifications” on page 53, the picture is reduced in 
size and the picture quality may be less than the original. This is 
not a malfunction. 

• Eliminate the use of video cable extensions and /or video switch 

boxes.

• Check that all plugs are firmly seated in their sockets.

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