Benjaminsswanson

Thank you all for the quick responses. I hope to open it up this weekend.

Hi, My dad bought some Carver stuff back when I was about 10 years old and now I have some of it in my living room as a 43 year old. I am currently utilizing the HR772 and 90% of the time it is working great. Occasionally though, it will turn off a few seconds after powering up. I have it powering some Hafler Model 400 towers. I also have a Hafler DH 500 but it is giving me some trouble too. Dad used the HR772 to run some JBL L36s for a while, then the Hafler Model 400s. He borrowed a couple of my Kenwood L-07ms for a bit and then we found a DH 500 for him. When using the DH 500, he used the HR 772 as his preamp. This was my intention when I inherited them, but the DH 500 needs some work. In the meantime I have been using the HR772. Now it is giving me some trouble. I am mechanical engineer by trade and am comfortable with tools and can brush up a bit to read some electrical schematics, but make no claims to be an electronics expert. I have a Dim Bulb Tester that I built a while back, but haven't plugged it into the Carver yet. I have a soldering iron as well. I also am open to recommendations on shops if that seems like a better route. I live in Atlantic Beach FL (basically Jacksonville). Thanks in advance for any direction. Grace and peace, Ben