Panasonic Portable dvd/cd player model #DVD-LS90 The player turns on and tries to read the DVD. However, it no longer spins so the DVD cannot be read.

No, your machine will have a Region Code shown on the box or in the manual. You're trying to play a DVD with a different Region Code. There may be an unofficial modification, but you'd need to search the dark corners of the internet to find it.

Check to make sure the wires are making a good connection and restart the system.
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You could always try to replace the screen by trying to find one on eBay or some other used market that is broken, but has a good screen. Then simply swap screens.

Download Panasonic DVD LS855 Manual

You can buy one parts portable dvd from ebay to use the replacement part. Ribbon cable can be soldered together if you try that first.

Dropping any electrical unit will almost everytime destroy it. Sad but true...this unit may have many problems. I suggest you replace it altogether! Sorry! Thanks for asking!

I followed a few, of the already suggested answers. The first one I tried was to open up the back and use compressed air to blow out lint, food crumbs and dog hair that had found there way into the machine. This seem to have worked just fine. Now the machine is working, much to my daughters delight.

Did you turn on the input of the tv to receive 'external' input.? Did you plug the DVD into the right input?

Hi the code HO3 relates to their being a problem with the laser you could try using a lense cleaner and see if its just dust or something like that failing that its going to be getting the laser replaced let me know if you need further assistance.
If you type in your search box this
DVD-LS90 Portable DVD Player with screen HO3
then search this will then list a load of sites that cover your dvd player and will also tell you what that error code means have a look and if you was getting it repaired then their should be a few sites that are selling the parts you need ok

caribjim were you able to fix the problem

check out this link I think this information will help you. http://www.ledcar.com/pdvdh07/