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BUSH WS6680SIL WS6680SIL - colour loss

I have lost the colour and have been told that it could be a puruty fault or failed component or connection.
Is this worth repairing and what would be a reasonable cost?

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  • Anonymous Mar 11, 2008

    colour problem, backgrond looks like yellow at any color level



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If it is a purity or degause fault you are looking at £35.00 to £45.00 to put right.


Posted on Nov 21, 2007


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Losing my blue color

In the CRT sets, not only Sony, there are many types of failures that can cause a loss of a colour channel.

  • damaged or warn parts on the CRT circuit board that are associated to the related colour channel(s).
  • The CRT itself may be failing.
  • Defective interface socket on the CRT circuit board, or a cold solder connection under the connector or on the the CRT board, or along the path of the related video colour channel.
  • Intermittant loss or complete loss of the bias voltage supply for the CRT that drives the colour channel in question due to any failing parts, or some cold solder connections.
  • The CRT itself is going defective and thus failinig.
  • Cold solder connection(s) on the circuit board.
To find this type of fault it would take an experienced technician using the appropiate test instruments to make the necessary tests.

Considering the cost for the time and the necessary parts (if obtainable for an old set), you may find the set too exensive to have serviced.

Jerry G.

Sep 15, 2009 | Sony Televison & Video

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Thank you for your reply. I have since had my TV repaired by a local engineer. The TV needed a new part to restore the colour.
Helen Shaw

Jul 06, 2009 | Bush Televison & Video

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Remote code required for UK Bush tv model WS6680SIL/C7

Found the correct code for my TV & Sky remote... I searched a fair bit more on google for... "WS6680SIL/C7 code" and found... which the correct code for my Bush TV - 0742. Others you may want to try are Bush 0157 246, 263, 377, 037, 064, 065, 310,300,383, 399, 391, 402, 339. or Beko 0125 514, 398. Further, Alba Group are the firm whom own Bush brand amongst others. Google Alba Group to get their site and links to Bush sites.

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It could not be the playstation that would cause the fault. The set was probably going to fail anyways.

A brown casted picture sounds like there is a loss of the blue colour drive in the set.

Some TV sets have colour temperature adjustments in the user menu. Check to see if your TV has that option, and that the colour temperature is properly set up. You can refer to the TV's instruction booklet for details.

A loss of blue drive can be from failed components in the video path, or in the bias circuits that control the CRT's cathold current.

It is also possible that the CRT is going defective, and is losing emission from the blue colour electron-gun.

You will have to bring the set to a service center that has an experienced TV tech who can make proper diagnostics, and give you an estimate for the cost of repair.

Jerry G.

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Hi there!
May be that the colour Amp is at fault or the tube is busy failing. Commonly it would be the colour Amp (Dry joints or faulty drivers). The Green is dead. I have had cases where power surge can magnetise the tube to such an extend that the whole picture will show one colour. In your case I doubt it very much. Good Luck,JUS004

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what do you need to do in the service mode?

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this symptom is characterised by the loss of one or two primary colours. this symptom can be classified into three cases: 1) loss of red colour, 2) loss of colour blue,3) loss of green color. this symptom may be caused by a trouble in the colour demodulator, in the color amplifier or in the colour subtraction amplifier circuit. in your case loss of blue colour. this is a very complicated problem that you need some special test equipment like oscilloscope and color pattern generator in order to trace the signal. tune the receiver to a color broadcast station(a colour bar generator can be used to transmit a colour signal to the set). check the Z-axis demodulator, z-axis amplifier and the B-Y output circuit for the chroma signal. observe the signal process with an oscilloscope. if the color signal is not present use a VOM to locate the defective component in any of the above circuits. check the transistors and the resistors in the collector circuit. good luck!

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