The Forward primer is pretty bad. Many time, it would be more straight forward to synthesis a gene (cheaper and faster) instead of using cDNA.

What annealing Temperature and polymerase are you using in your PCR? 

It looks like the portion of your reverse Reverse primer that can anneal has a Tm of 61 and your Forward has a Tm of 67. NEB Tm calculator suggest annealing at 61-63 depending on Q5 or Phusion. It is also a good idea to keep the distance between Tm's to a few degrees.

http://tmcalculator.neb.com/#!/

I think you have a primer dimer contamination of one of your reagents or pipettes. This would amplify so efficiently that you would never get a proper amplification. Primers do not bind ETBR well and  primer bands are weak but double stranded dna gives strong bands If you are running a negative ( zero sample) control and still get the strong primer band then contamination is very likely. Can we see a picture of the gel with ladder and negative control please? Ryan's answer is good and troubling but perhaps the mixing of the reagents cold in the past has allowed some extension of the primers in the first round of the pcr. Were you using the same enzyme and cycling profile earlier when the pcr used to work? Do you havea housekeeping gene primer set that you can test the cDNA with?

Yes, it would be worth as mentioned by Paul Rutland that housekeeping gene PCR should first come positive to understand that there is no issue with cDNA template. Then you can check with Primer Tm or contamination.