Hi everyone a newbie here, I've had my pst about 6 years now but due to a neck operation not been able to do any obsering day or night for about 20 months.Last week i set it up on my vixen porta ll mount but couldn't see the sun at all, not a faint image or a blurry image just blackness.Now having used my pst fairly regular pre op i new all its little quirks like in the little solar finder the sun was not dead center but was above center and to the left so i know my pst pretty well. I've been trying to find the sun but to no avail so i have stripped it down to see if i could see anything obvious, the prism seems to be inline the itf filter is a slight mirrored greenish one side and a slight mirrored pink on the other.The objective lens is a nice blue and looks clean all the way so i am at a complete loss. I tried a little experiment with the itf filter in which i turned my iphone light on and sat the filter on top and i did see the faint light through it. So what i would like to ask is have any of you had this problem or heard of this problem or even any ideas, my little pst that 2 years ago used to give me some great little images seems to have given up the ghost, it's got me totally baffled thank you for your patience many thanks ian..