previous: KC Bill, I've just sent you the schema... -- 1107115520

Re: Marshall Valvestate 2000 AVT50 Head - Transformer

2/11/2005 8:51 PM

Bill

Re: Marshall Valvestate 2000 AVT50 Head - Transformer Hi KC,     Sorry it’s taken me so long to get back to you. I really appreciated the schematics; that was awesome of you!     My first assumption was that the transformer was bad, however, upon closer inspection it turns out it’s the power amp chip TDA7293; I can see clearly where it burned and bubbled.     If not too much trouble, I was hoping you wouldn’t mind answering a couple of other questions for me.     1. Assuming you’ve repaired these in the past, can I just buy the “AVT Power Module” (PCB 62-00) or will I have to sweat the bad chip off and solder the new chip onto the existing board?     2. Is “AVT Power Module” the actual assembly name that I would ask for?     3. And one last question. The name data on the fuse I pulled out of my amp is “W1.6A250VAC D198 ” but the schematic calls for a “T1.6A L=120V” Would it be safe to use either the T or the W?     Any help/ insight you can offer would be greatly appreciated. (can you tell I’m new at this, LOL)     Thanks Again,     Bill

 

Replies:

Enzo You can buy the 7293 in the general... -- 2/12/2005 2:07 AM