MY HITACHI PLASMA HAS NO POWER MODEL NO 42PD580DTA

Without remote it's not possible. Try to consult the service center for original remote. Then only you will be able to unlock the panels.
If you wish to get some other details about flat panel television repair then check the following link
http://electro-medical.blogspot.com/

I assume your DVD is coming up in colour when you plug it into a standard scart connector? Have you tried using a different S-Video cable because this sound symptomatic of a dodgy lead?
Check the SCART end of your lead for any bent or broken pins.

Failing that if the problem lies with the TV itself I'd really recommend having a pro look at it. Plasma's are expensive and opening it up if you don't know what you are doing is a bad idea.

No, but Hitachi can or if you have the owner manual it will have that if the set has that feature----Google the model number for "manual" or "unlock keyboard" etc.

Hello
The power regulator board in your Hitachi is not switching. It is an SMPS [Switched Mode Power Supply]. Normally for plasma TVs the power supply repair will be almost impossibele due to lack of component availability. If the fuse is OK, definitley the switching process has failed it it. There is an IC which oscillates at high frequency, whic its oscillation signals are given to MOSFET transistors to chop the incoming AC, converted DC voltage. These switched voltage is passed through SMPS transofrmers which it turn generates secondary voltages that goes to different circuit boards of your TV. The power board is the most important section in a Plasma TV. it must be perfect in every respect in terms of secondary voltages. If any one of this voltage goes over than specified, the main boar will get damaged. So it is adviced to replace it as card basis, rather than making "sugery" to it. The power supply board can be had from Authorised Hitachi Service centers. You just give the the exact model number of your Hitachi TV. They will give you the orginal power supply board. Never play experiments with Plasma TV. OK.

These are the only manuals available. Maybe one of them will help.

Hitachi P60XR01U manual for Plasma TV

Hitachi P60XR01E manual for Plasma TV

Hitachi P60X901 manual for Plasma TV

Hitachi P55T551 manual for Plasma TV

Hitachi P55H4011 manual for Plasma TV

Hitachi P55H401 manual for Plasma TV

Hitachi P50XR01U manual for Plasma TV

Hitachi P50XR01E manual for Plasma TV

Hitachi P50X902 manual for Plasma TV

Hitachi P50X901 manual for Plasma TV

Hitachi P50V702 manual for Plasma TV

Hitachi P50V701 manual for Plasma TV

Hitachi P50TP01UA manual for Plasma TV

Hitachi P50TP01U manual for Plasma TV

Hitachi P50TP01EA manual for Plasma TV

Hitachi P50TP01E manual for Plasma TV

Hitachi P50T501A manual for Plasma TV

Hitachi P50T501 manual for Plasma TV

Hitachi P50T01UA manual for Plasma TV

Hitachi P50T01U manual for Plasma TV

Hitachi P50T01EA manual for Plasma TV

Hitachi P50T01E manual for Plasma TV

Hitachi P50S602 manual for Plasma TV

Hitachi P50S601 manual for Plasma TV

Hitachi P50H401A manual for Plasma TV

Hitachi P50H4011A manual for Plasma TV

Hitachi P50H4011 manual for Plasma TV

Hitachi P50H401 manual for Plasma TV

Hitachi P50A402 manual for Plasma TV

Hitachi P50A202 manual for Plasma TV

Hitachi P42TP01U manual for Plasma TV

Hitachi P42TP01E manual for Plasma TV

Hitachi P42T501A manual for Plasma TV

Hitachi P42T501 manual for Plasma TV

Hitachi P42T01UA manual for Plasma TV

Hitachi P42T01U manual for Plasma TV

Hitachi P42T01EA manual for Plasma TV

Hitachi P42T01E manual for Plasma TV

Hitachi P42H401A manual for Plasma TV

Hitachi P42H4011A manual for Plasma TV

Hitachi P42H4011 manual for Plasma TV

Hitachi P42H401 manual for Plasma TV

Hitachi P42H01U manual for Plasma TV

Hitachi P42H01E manual for Plasma TV

Hitachi P42A202 manual for Plasma TV

Hitachi P42A01 manual for Plasma TV

Hitachi CL42PD2100 manual for Plasma TV

Hitachi CL37PD2100 manual for Plasma TV

Hitachi CL32PD2100 manual for Plasma TV

Hitachi 70VX915 manual for Plasma TV

Unplug foxtel three video pins cable and plug yellow video cable of dvd then play it, you will get correct and clear picture in video input.
You can not plug composite and component video at same time in video input of tv, that is cause of your problem.
Thanks

turn tv on the red power light comes on then goes off again

Here's a link for a replacement cord for a model P50H401:

Hitachi P50H401 Replacement Part Power Cord

Other than a defect in the player itself, I would change the cables between the DVD player and the TV.

Hope that helps...

Geno