Picture gets bad after playing a while

Question edited for clarity
Question moved from Cars and Trucks.

I can find anything, and what was termed a 'Service Manual' was in fact a parts manual. Try running the machine and you will see a pulley turning. The pulleys have to be in line. Put a belt on that one, and the pulley opposite it. Then see what that turns and follow the drive train.

https://www.google.com/search?q=aiwa+hv-mx1+service+manual

and

https://www.google.com/search?q=Aiwa+hv+mx1shv+replace+belts

..

Probably not then, but you could try a tape recorded at EP.

If no-one has altered the pin code it's often 0000 etc.

The remote might be found here:
http://www.partmaster.co.uk/cgi-bin/search.pl?query=Aiwa+remote&search.x=31&search.y=9

with the unit unplugged take the case off and look on both sides of where the front of the tape would set, you will see two towers, one is a light and the other a receiver,check to see they are plugged in and not obstructed.Also there is a switch that the tape pushes when its all the way in which might be stuck,click it a couple times with your finger.This might help, there are other more complicated things which could cause this problem but mechanical problems are more likely.

how do i unlock the pin code? aiwa fx7500k

If you are asking 'why ' does this VCR have 2 speeds, it is to help you locate a certain portion of the movie fast. If you are asking 'Does' this VCR have 2 speeds, the answer is YES.

Too little information to give any information / help / opinion. What actually happens? Does the Display come on properly? Do you hear any mechanical Noises? Like a motor whirring? Are you able to load a cassette into the machine? Does it get ejected automatically? As you say that the machine switches ON, I assume tyhat the Power supply cicuits are Ok, and this leaves us with the possibility that there is a mechanical problem.Is it that the machine was not used for a long operiod of months or years? If that is the case, in all probability the belts are damaged / broken / loose. I really need more info, please.

if your vcr is a multisystem, select the proper system in your vcr for the video to be played. but if not, you cannot play your PAL in your NTSC vcr. good luck!

Just Clean the Video heads with a Wet Type Head Cleaner. Do 2 or 3 runs. Should clear up the problem.