Display turns on but wont start. Unable to choose setting.

Dryer will not Start. Display to my dryer turns on when depressing the “Control On” button. The minutes are displayed under the “Heavy duty cycle” but when depressing the “Start” button, the dryer will not start. Also unable to choose any other drying cycle or setting when turning the knob. Just a few weeks before the the dryer not wanting to start, the drum belt was looking pretty bad so I took the dryer apart and replaced the belt myself. It was after I replaced the drum belt and putting everything back together that I noticed that the light bulb inside my dryer would sometimes not want to turn on when opening the door. The light bulb would flicker on and off and sometimes just not turn on. Didn’t think it was a problem because the dryer continued to start without any problems. Again, even with the light bulb inside the dryer not always turning on, the dryer started up without any problems. A few weeks later the drum rollers were replaced because they were making noises when dryer would turn and tumble. The NO START issue began after replacing the drum rollers and putting the dryer back together. I replaced the door switch thinking that the light bulb not wanting to turn on might also be related to the dryer not wanting to start. Replacing the door switch did NOT correct the “No Start” issue. FYI, the light bulb was flickering on and off the other day after opening the door. It was intermittent and only flickered after opening the door all the way and only after applying forces from different angles to the door hinge. It seems like the door hinge area (not the door switch) allows me to apply bending force and some how affects the light bulb in the dryer. Its almost like something electrical is not making full contact. As of yesterday, the light bulb doesn’t turn on or flicker when applying force from different angles to the door hinge (door hinge/pivot). I don’t believe the light bulb flickering is related to the “no start issue”. Only other thing I can remember happening was the the dryer control board located at the top left of dryer, falling off the side after removing the DRUM. One of the wires to the board came off the rear top of the dryer connector. There is this small connector that is located at the top rear of dryer where it receives two wires from the control board. The wire did come off with force but I reconnected the wire and is not lose. Any help is greatly appreciated.

Removed the two ribbons (P4, 1-6 and P3, 1-14) from the Machine Control Electronics. I used a safety pin on the actual ribbon connector to perform the test. I followed the steps on "Checking Functions of Buttons and Rotary Cycle Selector" on page 11. Inserted a safety pin on the corresponding testing # to the ribbon, placed the +lead on the pin and used the -lead on the corresponding # on the connector to the board. While both leads were on their correct areas to test, the corresponding buttons were depressed to see if an ohm reading would register on my multimeter. After going thru each button listed on the chart I got "0L" on my multimeter. Went to check the Rotary Cycle Selector and also got nothing. Then went to test#2 and went to check resistance between P1-3 to P1-4. I got confused with this test because I wasn't sure if I had to disconnect the connector from the "Machine Control Electronics" board. I left the connector on the board and back probed using the -lead and + lead from my multimeter. I got sound and 2 ohms here. I then disconnected the connector from the board and decided to check out the readings at p1-3 and p1-4 on the board and got a reading of "0L". Went to check the connector with the wires at p1-3 and p1-4 and got 2ohms. Not sure if I am doing this right. On the first test performed it clearly says to unplug the ribbons for checking the rotary and buttons. On the other test it doesn't mention to unplug P-1. I also performed the "more time-less time, more time-less time" and all of the lights on the control display lit up with a number 88 also appearing on the minutes left display. While in this mode I opened the door and it beeped like the test showed it would if functioning correctly. I also used the wet towel on the moisture sensor strips in the dryer and it also made a beep sound indicating that this was also working correctly. Also was confused on a different test that called for the +lead to remain on p1-14 all the time. I cannot find p1-14 anywhere on my board. Kind of stuck right now. any help is greatly appreciated.