I have a Samsung HCN5529W projection tv. The

Check your signal source, if not then the tv will require repair. probably the vertical IC or flyback transformer. in any case it has to be done by an experienced technician.

then try using RY able instead of HDMI input to test if its a cable problem

replace the board or convergance IC. IE... deflecton/convergance

Is it possible that you need to set your input to Ant. A? Just a thought...

Replace the Lamp Call FOX 1-800-227-5369

hello What you have is a convergence problem. There is 2 modules inside your set that aligns the colors to have the same geometry and superposed . It is a common problem in rear projection tvs ,
You don`t have to worry about your blue tube , i`m sure it is perfectly fine, it just needs to be aligned through the convergence circuit.
Most often the problem is with those convergence modules that are faulty and need to be replaced.
Hope this will help good luck

its not the cap. its the flyback xformer

More likely its one of the Video output ICs which are located on the three CRT drive boards. I have seen that happen when one of the ICs fail they are TDA6111Q heres what they look like they are attached to the aluminum heat sink on the drive board

Symptom: NO PICTURE
Cause: DEFECTIVE 3D/YC COMB FILTER
Symptom: DARK PICTURE
Cause: DEFECTIVE 3D/YC COMB FILTER
Symptom: DARK PICTURE
Cause: DEFECTIVE C724

There are 2 convergence IC's in the typical projection TV, and one of yours has burned out. If you have green sagging from the top then the convergence IC that handles Green Vertical (GV) needs to be replaced. The Samsung sets typically use the STK392-040 IC's. If you have no experience replacing convergence IC's then let a qualified tech change it for you.