Question about Samsung HCN4727W 47" Rear Projection Television

1 Answer

Power light comes on and blinks then tv shuts down.

Hello,

I am currently having the same issue as another member (Pserrano) with the same model tv. I have copy and pasted his question below.

   "My television will not turn on.  If I plug it in, or press the power button the red led lights up 10 times.  Every other blink is slightly longer the the other.  Are you familiar with this problem?  Thanks you in advance for your help."

Thank you for your time.
Jerrelle

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  • 2 more comments 
  • beniah Dec 24, 2007

    having the same problem wont turn on , need to know what part to change

  • dziekan7 Mar 26, 2008

    I am having the same problem with my television. Thanks for the advice...

  • Anonymous May 12, 2008

    "My television will not turn on. If I plug it in, or press the power button the red led lights up 10 times. Every other blink is slightly longer the the other. Are you familiar with this problem? Thanks you in advance for your help."

  • Anonymous Jun 12, 2008

    TV will not come on, just the blinking red light. We have replaced the STK chips, but there is no change.

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1 Answer

It is a board convergence ic

Posted on Jan 06, 2008

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Posted on Jan 02, 2017

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The problems you are having are an indication of a Power Supply problem. The issue could be in the switching power supply or the High Voltage Power Supply. The shutdown circuit is activating which is allowing the TV to play until it detects an over-current event. When an over-current event happens the shutdown circuit will turn the TV off. I would suggest that you check the Horizontal Output Transistor, the HV Transformer, the Horizontal damper diode, and the capacitors that are in parallel to the damper diode. The important thing is to find the component that is causing the problem. If you do not have a background in electronics I would suggest that you get a qualified electronics technician to look at the set.

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1 Answer

Red light blinks 9 times on Panasonic TH-42PZ77U


hello, panasonic plasmas have a safety shut down circut to protect the main panel when a short is present or internal circut panel is non functional some info i found in the service manual for 10th generation plasma
if your tv is still under warantee take advantage of the pany free service other wise it is a matter of exchanging the defective board then you will need electronic skills for this repair if you plan to do it yourself. it would be wise to have a skilled tech check it out and give you a estimate there are some techs that will come out and check it for free and give you a repair price.

here are some repair manual tips for blinking panasonic .. i didnt find 9 blinks on this manual i may be using a different manual but these are panasonic plasma blinking fault tips for 10th gen
becuase all models have different blinking codes you may need the model specific service manual

for 10th gen model some models 2008,2007,

8 Blinks SOS:
Pin 91 of the MPU IC9003 monitors the status of the SS board. During normal operation, pin 8 of connector SS23 outputs a low to pin 91. If the SS board becomes defective, a high is provided to pin 91. As a result, the unit shuts down and the power LED blinks 8 times.

9 blinks panel config sos

10 Blinks SOS:
The SUB5V and DT9V sources created on the A board are monitored by IC1100. If they are not present at pin 30 and 34, the MPU shuts down the unit. The power LED blinks 10 times.

10 Blinks SOS:
The F_STB_15V of the P board, as well as the derived SUB5V and DT9V sources are monitored on the A board for excessive current. If a short circuit is developed in one of the supplied lines, pin 114 of IC1100 receives a high. The SUB5V and DT9V lines are also monitored for excessive voltage. When an over-voltage condition is detected, a high is also output to pin 114 of IC1100. The DT9V is provided to a DC/DC converter to create the BT30V for the tuner. If the BT30V becomes excessive, a high is output to pin 114 of IC1100. A high at pin 114 of IC1100 causes the unit to shutdown and the power LED to blink 10 times.

hope this helps..


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Hello gws51,

This sounds like a shutdown circuit proble, which is caused by the draw of excessive current. I would suggest that you have a qualified TV repair person look at you set and repair it.

I hope this helps

Thank you,

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