Hdmi ports on tv do not work but other connections do work. What's the problem?

SOURCE: the HDMI "input" ports damage output ports of connecting devices

i know this sounds stupid, but have you "toggled" or "played" with the HDMI cables? are they the same manufacturer? HDMI channel connections are very fickle. If just one connection is not exactly correct, they go to a limp, no go status. Since they run at such a minimal voltage, i can't see them "blowing" the outputs on the devices.however....if your cable has a serial type output for video only, I would connect the hdmi convertor to it and see if it works.

SOURCE: No sound through HDMI port on rear of tv

You could replace the HDMI port on the TV, it's no different than changing a USB port card in your computer. But, finding the replacement HDMI port card for your TV can be tough. Try shopjimmy.com for parts.

SOURCE: TV wont detect HDMI Devices except a pc.

Something is wrong whith the HDMI jack it's self, or the electronic switching is not sensing a signal is present. In either case the board that has the HDMI jack you are using needs to be replaced. Most all these boards are double printed, Multi-layered or both which prevents replacing the jack it's self. I do have a question though, do you only have on HDMI jack on the unit or do you have another one available.

SOURCE: Philips LCD TV "47, model PFL 8404H/12, NO SIGNAL on all 4 HDMI

This is quite tricky as it was working until last night and suddenly stopped receiving signals. What can happen wrong?
Do you have any other Player or other HDMI cables to try out. Sometimes the cables would be damaged or PC may fail to detect the HDMI.

Try this out from Philips helpdesk where there is new SW and FAQs are available.
http://www.p4c.philips.com/cgi-bin/dcbint/cpindex.pl?ctn=42PFL8404H/12&slg=en&scy=CZ

Let me know if you are not able to upgrade the FW (if you do not get the support on ugprading)

SOURCE: HDMI ports will not work

Unplug the tv,satalite box and playstation 3,replug all the devices about an hour later.Go in ur tv menu,goto PICTURE,go down to reset the Tv Tuner board,will reset the tv Tuner board will reset it back to factory setting.Than still have the same problems.The tv Tuner board it dead,require the Tv tuner replacement.