Cant find a service manual or schematics for a philips plasma tv "42 pf9936/37

no isp means Internet Service Provider which is your internet source.
the usb ports are on the side of the tv
http://www.manualslib.com/manual/331535/Philips-26pfl5302d.html?page=27#manual

Look for service manuals and schematic diagrams for Philips Plasma for troubleshooting and maintenance here
http://myfixbase.com/service_manuals/philips/plasma.html

Hi Jim:

You can find an owners manual on the Philips site.
There's also a quick start guide and a firmware update.
http://www.p4c.philips.com/cgi-bin/dcbint/cpindex.pl?ctn=42PF7320A/37&scy=us&slg=en

Try the above link, should take you to the site..or you can
do a google search....
owners manual Philips 42PF7320A/42

you should see this link in the list of links...maybe the top one.

42PF7320A/37 Philips flat HDTV 42PF7320A 42" plasma digital cable ...
May 25, 2007 ... Philips flat HDTV 42PF7320A 42" plasma digital cable ready with Pixel Plus ... Manuals & documentation · Leaflet · User manual · Quick start guide. + More Manuals and Documentation ...
Hope this helped.

There are only Flow charts available for most sets today. Without some basic trouble shooting skills in electronics your going to have a rough time.

Right now, your TV is in " Protection Mode". A damaged part has occurred inside on one of the power supply boards. The red flashing light is a trouble code for a tech to trace the trouble circuit path.

If you have electronic experience with circuit boards, you can find a Service Manual for the TV on the internet for less than $20. This Service manual will have the schematics, red light codes, circuit diagram, and part number list you need to fix the board.

The TV is going into Protection Mode. When a failed part occurs inside the TV, it will turn itself OFF automatically to prevent further damage to other components. I'm sure the red light is blinking a code also.
Most likely the problem is occurring on the Backlight Inverter Board or the Main Power Supply. The Backlight Inverter Board is what brings power to the screen. The Main Power Supply is what brings power to all the circuit boards in the TV.
I would use the warranty if there is any to fix the TV. The repair shop may charge a crazy price to fix the problem.
If you have some electronic experience and you want to fix it yourself, you can sometimes find a Service Manual over the internet for less than $20. It will have red light blink codes, diagrams, schematics, and part numbers for every part on the boards. Replacement parts can be found by using the part numbers for the search on the internet. Most parts cost less than $10. Whole replacement boards can be found at a good price at Shopjimmy.com.

Try a web search for "instruction manuals". There are many available.

Try to replace T-Con Assy.
Download Service Manual from attached link: LG 42PC1RR CHASSIS MF056L SM Service Manual free download schematics...

When you turn on the set and it has sound, can you bring up the menue? [email protected].

try at eserviceinfo.com for schematic if they have in their archive.
good luck.