Greetings HTS Peoples. P50S601 Panel Test Mode??

Called a service center and they said unplugging the unit should have reset the pram [?] and the tv set should have exited out of the test mode. He transferred me to another tech and he didn't even know that the Hitachi's had a Panel Test Mode (says they are common in Samsungs).

So after looking into their database he confirmed that unplugging the unit should have reset the tv effectively exiting out of the Panel Test Mode.

He says you have something else going on there.
I'm willing to bet that the person asking the question on Answer.com intentionally entered into TPM and didn't know how to exit out of it. He later figured out that unplugging the set does the trick but was too embarrassed to relay the simple solution on the thread he started.

But back to your problem....
I can't think of what the problem with your set is.
I'd bet that it has nothing to do with the SDRs or X or Y-SUS.
Maybe a logic board? (that was an uneducated guess by the way).

What cables do you have currently connected to the TV?
Do the colors show on all signal sources?

I just heard back from justanswer and this is what they said..

If someone can help me navigate the service menu then i think we will be golden.






If you are TRULY in service mode, then you should be able to simply press MENU and it will switch from the test patterns over to the Adjustments.....



If you are NOT TRULY in the Test Pattern/Service menu mode, then you simply did not turn OFF the test patterns, and you have to do that.



So....press menu when your turn on your TV and see if the patterns switch over to adjustments.



If it doesn't....then do the Menu 8 command.



This is key....if you cannot access the menu 8 (which is supposed to deactivate the Menu 9) then you're in a whole world of Hurt.....



Now, if you DO get to Menu 8.....then simply power down the TV and unplug the power cord for a full minute.



Plug it back in, and if it still pops up the test patterns, then do the FACTORY RESET listed here ---"which I linked in"


http://i135.photobucket.com/albums/q150/freemind286/2012-01-24_180314_untitled_-_3.jpg

If memory serves me correctly, you just can't back out of Menu 9....you have to press Menu to go to the adjustments, that turns off the test patterns, then you back out of Menu 8.

Okay, so this just gives more credence to the assumption that something major is wrong with the set.
The flashing test pattern must be just a symptom or by product of the underlying cause.
Some TVs just die while some exhibit odd behavior (like this).


At this point its WAY beyond my skill level. I would consult a local shop about the issue.
Hitachi has a SERVICE LOCATOR which uses your zip code to find the nearest shop.
I would call a few of them up and see what they have to say about this. I suggested a Hitachi recommended service shop as opposed to the good men and women listed on the NESDA directory only because I assume the ones registered with Hitachi would have more experience with Hitachi sets and can diagnose the issue rather quickly.

For a few bucks they can tell you what's really wrong with the set and then you will know if its worth the effort to fix it. At this point I really doubt its anything simple. It's not likely a video (buffers) or a power supply problem as are common in this forum and thus beyond what's reasonable for a do-it-yourselfer with little or no electronics repair experience.

The hard part right now is diagnosing the problem.
If it is indeed a logic board its COULD be replaced for RELATIVELY LITTLE MONEY.
But an accurate diagnosis is what is needed before any money is spent on parts.

If you spent 1-2 billable hours of a repairman's time finding out what was wrong and a little more than $100 to replace the defective part(s) you would have saved a lot over buying another TV.

Again anoter reply from justanswer.

Well, worst case scenario is the main board cannot control the on screen display that generates your test patterns. That would mean the main board has to be replaced to correct that issue, and when I did a "quick check" on the main board, I didn't find any in stock.



Of course I didn't do "in-depth" searching for the part....just a quick check to see how "available" it was.



That's where we may get into a "whole world of hurt"



So.....did you check and see if your TV was still in service mode by pressing the MENU button and seeing it switch over to the adjustement settings?



Or did you have to do the Menu, Menu, Menu 8 and then see the test patterns switch over to various settings that displayed on the screen?



As long as it switched....then we have "some control" over the computer/system control.



And that's more promising.

Well my thought didn't work so my next step is to pull the board.

This is the post that I receieved from justanswer.


I understand. You have a problem that will require board replacement.



Model -- P50S601

Part number -- UX28027



That's your main digital board that has the system control on it.



Sites that sell that board --



http://www.amazon.com/Hitachi-Psa-Dw3-Main-Ux28027/dp/B001K5LUO4

http://www.ebay.com/itm/New-Hitachi-Main-Digi-PSA-DW3-B-UX28027-/290569095746



http://www.encompassparts.com/products/?EGRUX28027



http://www.searspartsdirect.com/par...57/528?psid=124331090&sid=PSx20071217x00001a& ;OVMTC=Phrase&site=&creative=8136510864&OVKEY=ux28027&url_id=124331090&adpos=1o1&gclid=CIXxueqj6q0CFbAAQAodRXGM6A



When you get the new board in, lay your TV face down on a padded table and remove the back cover, remove the plugs, remove the screws and swap the board out.