Vivitar 2800 This unit has been in a closet, no batteries installed, for years. I inserted working batterie, but it does not flas at all. Do I need new capacitors? Is it worth fixing ? Is that something I could do myself?I will be grateful for you opinion. D.W. Cugell

1 Does it give the normal little charge up whine when you turn it on?

2 Are the battery terminals clean?

3. Double check with new out of the packet top quality Duracel or Energiser batteries. Don't waste your time testing anything like this with mediocre or average batteries.

4. If you have to ask if you could fit new capacitors yourself, the answer is DEFINITELY NOT. These caps are not like on a computer motherboard: These can stop your heart.

5 Some of the big camera shops can give you a free repair quote, or if not will deduct the cost of a declined quote from the price of a new flash.

Anyway, good luck.