Did you check all the fuses at the bottom of the cabinet?

Make sure all the connectors are correctly placed. Are you sating that the TILT light is lit when you turn it on? If so, check the slam switches and the roll tilt are not stuck. The roll tilt is a ball in a guide lane on the right front side of the cabinet. There are a few slam tilt switches - look for any big (long) switches that have a counterweight at the end of the leaf switch and make sure none of those are making contact.

I assume you can start a game since you know the flippers work. Does it score points if you knock down the drop targets or engage any of the rollover switches?

I thought there was a solenoid fuse under the playfield, but I opened mine and don't see one. It's probably one of the fuses at the bottom that you checked.

I have Roy Clark Entertainer also but the flippers do not work, everything else works good. I changed a few fuses & that didn't work. I had a pretty knowledge
able guy look at it & he couldnt get it either.

Can I get a a schematic anywhere? I checked a few sites & there wasn't anything.

Try Here: https://www.ipdb.org/files/785/Fascination_1977_Roy_Clark_The_Entertainer_Schematic_Diagram_paginated_document_maybe_incomplete.pdf
Is there a playfield fuse?

Allied Leisure ripped off customers by making vague promises to help find locations for pins for would be operators if they bought them. I used to take calls from cheated buyers with a garage full of pinball machines asking what they should do.
'Hit the bricks and find locations' was my advice along with, call your lawyer.

It's hard finding information on this and other Allied Leisure games. I picked up a Roy Clark recently. I have 0 experience with Allied games. Game seems to boot up and displays shows 0's (both of them). The 5V light does blink upon turn on and then turns off like it should from what I've read. I've re-seated all the connectors. The game over light flashes, when I try and credit up the machine the light goes solid for a second and then goes back to flashing. I think the game is just having an issue getting credits. I think it might start if I were able to get credits. Oh also the game does go into test mode and goes through the display check and can get to the switch test. But it won't go past the switch test. I did look to see if there are any stuck switches and couldn't seem to find any. Game is not tilted. Any suggestions on what I might be able to try?

Fixed! Turned out to be someone soldered a wire to short out the slam switch like you’d do to a Gottlieb System 1. I cut that wire and the game coins up and plays no problem now. I had to make some switch adjustments and I had 9 switches not working. I found a broken ground wire and soldered it back on and viola game works 100%! Now just need to clean it up and change lights etc.