I hope it is OK to ask this here. I'm using Hafler power amps right now. I've got two of them not working properly. Took one in to a tech and he told me the power transformer was bad and that they were NLA. I paid him for his diagnosis and took the amp home. I measured DC voltage across the two big caps and I get 67v+ on the one side and 42v- on the other. The other P230 reads 42v+ and 42v- on it's two caps. So, thinking he is right I search around and find a guy (soundvalves) who has two NOS power trannies. Great! I buy them. I get them yesterday and proceed to install one. Get it all installed and power up and measure voltage. No change. SO now I start unhooking things and take measurements on my good amp and the one I've just installed the tranny in. I've got 47VAC coming out of both leads on the tranny on the P230. 44VAC on each lead of My DH-200 which is in working condition. I check the DC voltage coming out of the bridge rectifier and I'm getting 67VDC+ and 44VDC- on the P230. The DH-200 read 60VDC+ and 60VDC-. Could it be my bridge rectifier? My other P230 reads about 44VDC+ and 44VDC-. Is this a common place for things to go bad?