Please help identify this amp

[kijana]

I just got a classy looking amp from a friend. It obviously has two blown transistors because the resistors next to them are all burnt out. Anyway, the label on the chassis reads

No. 18300
67095
MODEL DPA150-2

if anyone can identify this amp, please let me know. I would like to get the schematics for it so i can fix it. (It’s hard to read the numbers on the transistors...)

 

[MarkRehorst]

A photo would help.

I_F

 

[kijana]

Sorry, i thought i had posted one...ill post one tonight when i get home.

 

[jacco vermeulen]

Sounds like an oldy LEM amp, PA stuff from Italy.

www.generalmusic.com

 

[kijana]

Here is a picture of the amp am talking about. Please let me know if its worth trying to fix...i.e what should i expect in terms of power and quality once its fixed....and where to find information about it.
Thanks in advance....

 

[tomtt]

i'd just guess...

magnavox

can we see the other side(s)?



http://db.audioasylum.com/cgi/m.mpl?forum=vintage&n=74571&highlight=magnavox&r=&session=

 

[BobAF6C]

I just got a classy looking amp from a friend. It obviously has two blown transistors because the resistors next to them are all burnt out. Anyway, the label on the chassis reads

No. 18300
67095
MODEL DPA150-2

if anyone can identify this amp, please let me know. I would like to get the schematics for it so i can fix it. (It’s hard to read the numbers on the transistors...)

I was just given one of these amps. It obviously has a bad filter cap. I wonder if you ever found any information on they device?

 

[NareshBrd]

Most circuits are generic, based on the output devices.
Start from that.
TO-3, so 3055, or MJ series. Or European equivalents, very rarely Soviet (!).

Voltage will give you further clues.
Measure Hfe, and so on.

Also, check what brand caps are used, their origin will be a further clue. Just might be Japanese.

Not really outstanding, you can use the power supply for another output type, replace with generic transistor boards, or Class D modules.

Repairing old boards made in a small workshop scale factory, with average quality parts is not rewarding, in my opinion.

 

[Turbowatch2]

Looks like it maybe a PA amp, like they where used in schools. airports and other public buildings