Question about Philips 42PF7320 42 in. EDTV-Ready Plasma Television

1 Answer

TV does not turn on/red led flashes 7 times in front

My TV will not stay on and will go from green light to red light which flashes 7 times. I open the back cover and I saw in the power supply a green led light which flashes 3 times and found that it was a Vscan error alarm/code. So I started unplugging some connectors until I unplug the connector that goes to the board LJ92-01200A which they call a Y-board and the TV stays on and I can control the TV with remote or the side buttons. NO pictures but I connected and input (my video camera) and I can here the sound. Then I reconnected the cable and disconnected the ribbon cable that goes to Logic main board which one of the green LED is flashing too. I powered it up and I can control the TV on and off, the Vscan (3 LED flashing) is gone. It will only go back to the original proble if I plug in the ribbon cable from the Y-board. Was it the Main logic controller that is bad or the Y-board? PLease help...

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  • paul Sep 24, 2008

    I have the exact same problem (7 blinks and powers up when Y jumper disconnected.)on my Phillips 42PF7320A/37 set. I replaced just the Y main board and had no sucess. What checks should I preform for volts (values and locations to check) before purchasing Y-upper+lower buffers next? HELP!

  • Anonymous Mar 21, 2014

    The mainboard got water in it from the aerial. After this the remote stopped working. Tried changing the main board to fix this but the screen just stays black and a green and amber light flash at the bottom

  • Anonymous Mar 27, 2014

    I have a phillips 50" plasma tv. If the brightness is turned all the way down the tv stays on. If i set the brightness to 10 the tv shuts off with flashing red code 7 (8.6V missing). There is a board on teh power supply that has an led on it. When the tv is working this led is green solid. When the tv shuts off and flashes the error this led is flashing 1 time then pauses then 1 time etc. The sikscreen says that a flash of one is Va loss. Va is the 60Vdc that drives the brightness. I connected a meter to the 60v output of the supply and watched it drop as low as 40v. the drops in voltage and teh brightness of the screen are inversely related i.e. the brighter the screen the lower the voltage reads. When teh voltage drops to about 35 the tv shuts off. I disconnected the 60v plug from the top (series connected boards) and teh voltage drop was much less but still apparent. I disconnected teh lower (series connected boards) and i observed teh same behavior. With both disconnected the 60v was steady. I think that the problem is with the high voltage section of teh powersupply since i can see the drop at the 335v stage. I checked a single component that delivers the final 60v to the upper and lower boards. It is 2 diodes 10Amps each. I measured the current on this line and it doesnt come anywhere near the limits of this component so I dont think that the supply is being over driven.
    There are 2 large capacitors on teh high voltage section that look ok. I dont see any other problems either. Is there a common problem that causes the 60V to behave this way? thanks!

    -chris

  • josepovedaca Jul 03, 2014

    Daniel is right, but error 7 ref to ADC covertor IC. 7L04.

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  • 52 Answers

This is common issue with this model and through your troubleshooting is tied to y main board. blinking led on logic main in normal operation. when replacing y main always good idea to replace y upper and lowe buffer boards as they complete a circuit and sometimes replacing one without other could cause additional failure on remaining boards

Posted on Aug 19, 2008

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1 Answer

When i turn on my tv it tries to boot, blue mitsubishi home screen come up, i hear fan then it all shuts off while green light blinks.


Try a reset. Start by unplugging for 1 minute, then plug back in & if still won't restart try the following. If none of the following work, you will need a technician.

Initializing the TV in many cases can remedy a problem.
In the 2006 product line Initialization is now a user function.
Pressing the front panel "INPUT' and "FORMAT"
buttons at the same time activates Initialization. When
complete all user settings will have to be set again. The
table in Figure 4-3 list the User Initialization procedures.
Note: Pressing INPUT and FORMAT is the same as
the Initialization in the Option Menu (MENU-2-4-7-0)
Order Name Procedure Results Notes
1 System Reset Press <System Reset>
on Front Panel
Hardware & TV operating
software reset.
POWER/Timer LED flashes for 60
seconds. No customer settings
are changed.
2 User Initialization
Press <INPUT> &
<FORMAT> on Front
Panel at the same time.
All customer Audio &
Video settings are reset to
factory default.
All customer settings will need to
re-configured.
3 Reset System
Defaults
From the remote, press
<MENU> <1-2-3>
<ENTER>
All customer settings
except V-Chip are reset to
factory default.
Netcommand, Channel Memory,
etc., will need to be re-configured.
SERVICER
PROCEDURE 4 Initialization
From the remote, press
<MENU> <2-4-7-0>*
select "INITIAL" press
<ENTER>
All customer settings are
reset to factory default.
All customer settings will need to
re-configured.
MITSUBISHI RESET / INITIALIZATION CHART
CUSTOMER
PROCEDURES
Figure 4-3
Figure 4-4
LED Indications
The front panel LEDs, refer to Figure 4-4, also assist in
determining the cause of a symptom. Figure 4-5 illustrates
normal LED operation. Figure 4-6 shows the
LEDs response when a problem is detected and indicates
the possible cause.
Power/Timer
Indicator
Status
Indicator
Lamp
Indicator Condition
Off Off Off Off (standby)
Blinking green
fast Off Off Initialization (10 - 65 seconds)
Off Off Blinking
green fast Lamp runs for 1 min after PTV off
Green Off Off Power On
Blinking green Off Off Power On Timer is set
NORMAL LED INDICATIONS
Power LED Status LED Lamp LED Condition
High Temperature - check ventilation air flow.
(Temperature sensor is disconnected.)
Off Off Blinking yellow Lamp cover is open.
Lamp failure (Lamp fails to turn on)
Off Off Red (Lamp turns off after lighting)
Lamp is broken
Off Blinking Red Off Fan Stop
Off Red. Off Circuit failure. (Run Error Code Check)

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1 Answer

Tv desn't turn on,power light just flashes ten times and then stops and then again


Error Indication Information
Error No. Error Information ERROR DESCRIPTION LAMP LED OSD LAMP OFF
(Note 3) (Note 4)
POWER LED TEMP LED
Note:
1.When any of the above errors has occurred, the LED will flash as shown above every 5 seconds.
2.When two or more errors have occurred at the same time, the LED will light up or flash as shown above, and then
change to another every 5 seconds in turn.
3.Warning OSD appears when the Air Filter is clogged 90%, accumulated operation time of the Lamp reaches 5000 hours,
or accumulated operation time of the Air Filter reaches 400 hours.
4.LAMP OFF: The LED will flash right after the Lamp goes off.
5.IC2301 is mounted on LCD Main C.B.A. which is included in the Projection Unit.
6.IC6001 is mounted on TV Main C.B.A.
Clogged air filter
more than 90%
15)
16)
17)
18)
1)
2)
3)
4)
5)
6)
7)
11)
8)
9)
10)
12)
13)
14)
- flashes 5 times -
every 5 seconds
IC2301(pin82) detects the clogged air filter, then indicates the
error when the air filter is clogged 90%.
Front Fan stop or
Lamp Fan stop
flashes orange
once every
5 seconds
- -
IC2301(pin12) detects the Front FAN stop or Lamp
FAN stop, then indicates the error when the Front FAN
or Lamp FAN is stopped.
Lamp Cover open
Temperature Sensor
short or open
flashes orange
twice every
5 seconds
flashes orange
3 times every
5 seconds
flashes green for
140 seconds.
flashing red for
60 seconds.
light up red.
flashes once
every 5 seconds
flashes once
every 5 seconds
flashes red for
10 minutes
flashes once
every 5 seconds
-
-
-
-
Abnormal
Temperature
flashes twice
every 5 seconds
flashes twice
every 5 seconds
- -
Request for Lamp
Replacement - - lights up
Power Ballast Error
(abnormal
Lamp voltage)
- -
flashes 3 times
every 5 seconds
Power Ballast Error
(abnormal
temperature)
- -
flashes 4 times
every 5 seconds
Power Ballast Error
(other causes) - -
- -
Request for Filter
Cleaning -
Abnormal Voltage
on 16 V line of
LCD Main C.B.A.
-
flashes twice
every 5 seconds
flashes twice
every 5 seconds
Abnormal Voltage
on 14 V line of
LCD Main C.B.A.
-
flashes 3 times
every 5 seconds
flashes 3 times
every 5 seconds
Abnormal Voltage
on 7 V line of
LCD Main C.B.A.
-
flashes 4 times
every 5 seconds
flashes 4 times
every 5 seconds
IC2301(pin76) detects the Lamp Cover Unit condition
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IC6001(pin85) detects the Duct FAN stop, then
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IC2301(pin74 and 75) detects open or short of the Temperature
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error when Temperature Sensor is open or shorted.
(The error is not detected for 1 minute after Lamp ON.)
IC2301(pin74 and 75) detects the temperature attached near
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IC6001(pin86 and 87) detects open or short of the
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IC2301(pin74 and 75) detects the temperature attached near
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IC2301(pin11) detects the error of LCD Power C.B.A.,
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IC2301(pin11) detects the error of the Lamp, then indicates the
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IC2301(pin48) detects +16V line voltage on LCD Main
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IC2301(pin47) detects +14V line voltage on LCD Main
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IC2301(pin45) detects +7V line voltage on LCD Main
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flashes 3 times
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flashes 4 times
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Abnormal Voltage
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Forced cooling
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short or open
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Abnormal
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Duct Fan stop -
When accumulated operation time of the the Lamp reaches
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During forced cooling, this indication is indicated.
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Error Symptom Problem Possible Solutio

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4b8d433.jpg
Need further help, let me know.

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4 Answers

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