Hello, Few days ago I bought Zenit TTL. It shows next errors: 1. 1/30 speed is not 1/30 but on that position camera act like on B position. 2. X sync, that is 1/30 doesnt fire flash, but... 3. Flash fire on both 1/60 and 1/125 speeds, but... 4. Flash is not synchronized, that is half of frame has picture and half is black, on both speeds. It seems that 1/60, 1/125, 1/250 and 1/500 speeds works normaly, and other camera functions are OK. I didn't find battery yet, so I couldn't try meter. My question is should I try to fix it myself, I mean is that relatively easy to fix, or to give it to pro repairman. If it is relatively easy to fix, and I can do it myself, is there are some manual how to do it or like... Thank you.