Proton D1200 / AA-1150 / AA-2120 Owners Thread

[karljansen]

Of course, I checked the transformer without a load.

Share your process and photos here for the benefit of other AA-2120 owners down the road!

 

[Lynyrd9999]

Help me please.
I need two transformers, but I don't know their voltage. They have two secondary windings. Can anyone measure their voltage? I think I need 35V 0V 35V 8 .....10A 500....600 Va and 15V 0V 15V 2A 50 Va

 

[Lynyrd9999]

Power transistors 2SC3519A 2SA1386A
Big capacitors 10.000uf 80v

 

[Lynyrd9999]

 

[Lynyrd9999]

Second secondary

 

[Lynyrd9999]

 

[Lynyrd9999]

I found two transformers for PROTON D 1200 online. I'll have to cut some parts, but I'll share the information when I get them.

 

[karljansen]

Thanks for sharing the pics! I wish I could work on my own gear but a person can only have so many skills. My D1200 is sitting at a friend's place after something blew on it. He's busy so who knows when he'll get to looking at it. I miss those big green meters in my rack!

 

[Lynyrd9999]

Help me please with 2 secondary voltage of power transformer.

 

[Lynyrd9999]

Can anyone measure it on their 2120 amplifier?

 

[Lynyrd9999]

one person measured it on his transformer

40v 0v 40v and 48v 0v 48v

 

[Lynyrd9999]

Can you help me with bias adjustment

 

[PabloTincho]

Anyone found the main capacitors for the D-1200 ?
4 15000uf 120V

 

[lms]

https://www.ebay.com.au/itm/175845314236?_skw=proton&itmmeta=01JS6QT35TKJNXD44EG2N71WE1&hash=item28f1328ebc:g:vVMAAOSw7PxhRWsJ

 

[PabloTincho]

I wonder where is he getting those main capacitors

 

[lms]

more info

 

[karljansen]

more info

This is what I was going to suggest. I have communicated with the seller but have not tried ordering them yet because my D1200 is still out of commission and waiting for a precise diagnosis. If anyone orders these please let us know how it went.

 

[PabloTincho]

I was testing my D1200, and I did not find it that powerful compared to another 200 watt amp, is that normal ?