42" Fujitsu Plasma TV (About 10 yrs old)

Typically this means you've got a power supply that went bad. I've been doing research for a potential class action lawsuit on these "blinking lights of death" problems that the Panasonics are having and that is usually why the tv will show 10 blinks. Occasionally another component inside the tv can be what caused the tv to shutdown and show the 10 blinks.
I'd like to hear more about your experience with the television and any contact you've had with Panasonic in an attempt to get the television repaired. If you're inclined to share your story with me, please contact me at [email protected].

See Fixya tips and tricks:-
'Fujitsu Plasma 42" random shutdown - continuous flashing red'

While the model of your set is slightly different, the checks described generally still apply, as it is very similar.

A user manual is available from this link:-
http://safemanuals.com/user-guide-instructions-owner-manual/FUJITSU/PLASMAVISION%20PDS4221-_E
Check for a hidden power switch under the lower left or right under corner of the screen, ensure it is ON (- not sure if this switch is fitted to your model, but it does exist on other Fujitsu models).
Fujitsu no longer support or manufacture plasma screen TVs - therefore no parts are available from them. [Fujitsu only serviced to board replacement level - very expensive].
The Fujitsu models (generally, after 4 or more years use) suffer from cracked solder joints on circuit boards (due thermal cycling stress).
See Fixya tips:-
"Fujitsu Plasma 42" random shutdown - continuous flashing red led".

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The problem is in the standby power supply. the standby power supply generates the 9 volts and the 5 volts requird by the tv. If you measure the 9 volts source, with only the red light on, the correct voltage is 9 volts. However if the 9 volt measures 6.5 to 7 volts it is too low and the startup relays cannot operate. My set is a model 42FR9954/17S. In this set if capicator, 2603, is heated the voltage climbs to 9 volts and the relays work. If cold air is applied to the capicator the relays fail to operate. Replace capacitor 2503 and the problen is fixed. This capicator is: 47 Ufd, rated @ 450 volts, and is 20%.

Need to have the power supply checked by a qualified technician.

This is most likely caused by the Main Power pcb.

See Fujitsu Service Bulletin on this problem. -see link below
http://tomtom2k5.free.fr/fujitsu/PDP-0035-06.pdf

A competent service technician should be able to implement the service bulletin.

HI , i have the same problem . it is either the power supply unit or the plasma display panel . I am problem solving it currently . generally the cost is about $1000 (aus) to fix . it is worth doing as fujitsu are outstanding plasmas .
if u need service manual pls email me at [email protected] and will send service manual .it has the the checks to do so u know which part needs replacing . U need some experience to do the checks
hope this helps

This is most likely caused by the Main Power pcb.

See Fujitsu Service Bulletin on this problem in a similar model from Fujitsu. -see link below
http://tomtom2k5.free.fr/fujitsu/PDP-0035-06.pdf

A competent service technician should be able to implement the service bulletin.
A similar service bulletin is probably available for your model. Request bulletin from Fujitsu '[email protected]'

Hi to all, My 42" Panasonic plasma have the same problem. It turned itself off and now red light flashes 7 times, than after short pause 7 times again. And so on. Any ideas what is wrong??