Main cutters fell out how do you put it back together?

Do you have more parts in your hand than 2x screws and 2x blade parts? If no then pop the small cutter blade onto the plastic blade drive with the drive engaged into the diamond shaped hole in the cutter blade. Make sure you put the cutter blade on with the teeth facing forwards and the correct way up. The top side (goes towards clipper) is pretty much flat except where teeth taper. Next lubricate the small cutter where it is going to touch the large comb blade when you fit it. Now put the comb blade on and fit the 2 screws. Line up the blades & tighten the screws.

There needs to be a video for this one but if you look at your other blades they can give you a guide. I wouldn't take the others apart though.get your pieces together the best you can. Don't forget the little plastic sliding piece. When you tighten the screws tighten the two equally and try your best to align everything as much as possible. Now look at your cutter blade and make sure the teeth don't stick out higher than gaps of the teeth on the main part of the blade. This will cut a dog.

You should try replacing the cutter assembly with a new one. They are rather inexpensive ($50) to purchase and easy to install.

The only other thing I can think would cause your problem is if something is stuck in the groove by the cutter guide that would cause it to disengage while cutting.

angle cut blades have the cutter head angled at 25-35 degrees for easier insertion into tight spots. Shear cut blades are light normal scissor blades

Hello,
Try cleaning the head cutter below the main stem. Remove screws and clean old hairs in there, also lubricate.
Thanks

Unplug the machine then crank open the head up as far as it will go. Underneath, in the middle of the head you'll find two feed rollers and a cutter head with the blades on it. Even dull the blades are very sharp so work carefully. Each blade is held in place by a blade holder and eight allen screws. Remove all eight allen screws and the holder and blade will fall out. If they have excessive sawdust or tree goo on them they may need a bump from the plastic end of a screw driver to knock them loose. Keep track of how they come off so you can put them back on the same way only with the blade turned around. The top of the blade holder will fit into a channel in the blade so they'll all go back in lined up correctly. Turn the cutter head carefully to get at the other blade(s) to change them.

there is probably hair stuck between the cutters
remove the cutters from the clipper and you can push the top blade out from under the spring retainer making sure you keep the small plastic runner strip
clean the surfaces and using a flat bladed screw drive insert the blade under the spring and twist slightly to allow the top blade to slide back in
while it feels sharp , it is the sides of the cutter fingers that cut the hair ( like miniature guillotines) and those edges are easily worn off

I solved the problem finally. I discovered that the plate which has the 2 large threaded holes which carry the fixed cutter, had to be locked in behind 2 spring fixing points (on the body of the clippers) before inserting the tongue into the body of the shaver. When I first removed the plate I used a screwdriver blade to spring the tongue away from the body and the whole caboodle (4 pieces) fell out on the bench, so I didn't see how it was assembled. Thanks for your interest anyway.

Sounds strange, since I don't think that the HQ5 heads in the shaver have the pointy parts that other shaver heads have. If your comb has 2 pointy edges, make sure they are located correctly in the head housing - they will need to be located inwards, with the the spindle that the retaining bracket attaches to in the center of the the two pointy parts.

But apart from placing the combs in first, locating the cutters in then putting the retaining bracket in (which may be broken if it won't fasten properly) I'm not sure what you can do, other than calling your local Philips Service Centre,

You can get assistance and possibly a manual for your Vinyl Cutter from a Summagraphics Repair facility such as
ADVANCED GRAPHICS
1027 N. MAIN STREET
TEL: 210-227-9393
SAN ANTONIO, TX 78212
I hope this helps. Toni Gallucci, Glass Act