Question about Fujitsu Plasmavision P42HHA10 42 in. Television

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Power shuts off and blinks red .

Tv is plugged into a monster power supply with surge protector. have to unplug the plasma nd wait for about 5-30 min. before you can turn it back on. plasma is about 4yrs. old

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Re: power shuts off and blinks red .

For information:-
I have recently fixed my P42HHA10AS 42" plasma which had a similar problem.
Would run ok for periods, (sometimes 30 mins, sometimes 2+ hours), picture perfect. Then it would randomly fail - with loss of picture, then shutdown. Front panel led indicator goes from green (normal) to flashing red continuous.
After switch off, removal and re-application of power it would often re-start and run normally for a while.
Sometimes it needed to be allowed overnight to cool before it would run again.
I also noticed that the failures generally coincided with any change to the screen display mode or input mode settings.

Fujitsu service supplied service manual and Service Bulletins regarding this problem :-
Service Manual P42HHA10 is available at

Service Bulletin PDP 0040-01 Main Digital pcb see
Service Bulletin PDP 0068-01 Main Digital pcb see
Service Bulletin PDP 0035-06 Main Power pcb see

Worked through the service manual checks (service manual very basic- overview / DC voltages only - assumes availability of replacement modules). The troubleshooting flow charts lead you nowhere helpful.
Could find no fault with the power board, except that the 6.5V(nominal) was actually 7.4V at CN351 Pin12.
Added 2x Schottky diodes (1Watt) in series with the transformer 6.5V output winding - this lowered the output voltage to 6.6V. - However, this made no difference to the continuing fault condition.

This units problem was fixed on implementation of Service Bulletin PDP 0068-01 Main Digital pcb.
No other faulty components were found.

The mounting solder on the main processor socket was cracked on one corner at the pcb mount point. (See last picture in PDP 0068-01, page 2)
Re-soldered same, and the set has worked faultlessly since.
I became convinced over time that the fault was to do with the main processor board, as the failures were so random, and the set would otherwise run perfectly.
This fault is caused by a combination of solder fatigue, vibration and the thermal cycling of the pcb over time.
I expect it is a cause of many of the reported problems experienced on these Fujitsu panels.
I suggest that the above work should only be attempted by suitably skilled person/s, as very fine soldering and knowledge of electronic pcb repair techniques are required.
Good luck.

Posted on Aug 21, 2009

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Re: power shuts off and blinks red .

I had a similar problem, but mine didn´t switch on when pressing on button, I had to take the back cover off and hit the relays, it seems they get stuck, and are difficult to find to replace them. Now it has been working during almost a year with no problem at all. Mine is 4 years old.

Posted on Apr 08, 2008

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Re: power shuts off and blinks red .

It is something to do with the power pack / transformer which needs replacing.

Posted on Feb 26, 2008

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Surge protectors aren't perfect... If the surge was big enough and long enough then it can cause problems. Most manufacturers have on-board protection as well. That's not perfect either. Often the surge does nothing more than confuse the microprocessor (computer) that controls all aspects of your television. The fact that the red light is blinking means that your set is trying to protect itself. This can happen for one of two reasons. Something in the set has failed. Usually the power supply inside the set possibly also a trouble in the scan section of your set. These are normally a shop repair. The other thing is when the microprocessor is confused it will do nothing further until it's reset. To reset the processor simply unplug the set from the wall and wait 10 minutes. Plug it back in and if it works then happy viewing. If it doesn't then you will need a repair.

If is a failure caused by a failure in the grid that delivers power to your set then you are usually able to file a claim for the repairs. Contact your local power company. explain what happened. If it's their fault then usually they will pay for a repair. I know the PG&E does.


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I have no power to my Hitachi TV. It is plugged

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Power light blinks red 4 times

Try leaving the TV unplugged for 30 minutes so the TV can reset itself.
If that doesn't work, most likely the TV has a power supply related problem.
But, I can't say it's 100% that is the source of the problem because I can't actually look at the tv over the internet.
If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, if you can find and purchase a Service Manual over the internet. It will help you diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you red light blinking codes, circuit diagrams, test points, and part# lists. Usually, cost under $20.

I hope I shed some light on the subject for you.

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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:
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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:
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hope this helps..

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Tv won't turn on

I suggest you unplug the set for about 15 minutes and then plug it in and try again. Sounds like you may have had a power surge/bump in the middle of the night. Althoguh you are using a surge protector, doesn'r mean the devise hooked to it can't lock up during a power surge.( Surge Protectors are an insurance policy only, not a garrentee ). If unplugging the set and waiting doesn't fix it, it will need to have the power supply section of the board repaired. Good Luck
NC Electronic
Mills, Wyoming

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