GA5 Question/ Transformer Help!!!!

[Ampcrazy]

I am new at amp building and repair. I recently acquired a Gibson GA5 in need of TLC. The transformer, right before connecting to the speaker needs replacing. PLEASE any help on locating or substituting Greatly Appreciated.
a.bernie@gmail.com

[capnjuan]

Hi ampcrazy; can you describe what model GA5 you have? Picture maybe? How do you know the output transformer needs to be replaced?