JonMatisz Posted May 27, 2016 Share Posted May 27, 2016 I have a GA 19RVT given to me, but is in bad shape. The original power transformer is gone and has some monster one zip tied in it! Does any one know what the original one is and where I might purchase it? It is the model that has the brown Gibson logo on it, and a 6c4 reverb tube. Whoever changed the power caps did a horrible job. It looks like they used a soldiering gun on it, there are a bunch of half melted wires. I really love it when someone has no clue what they are doing and jump balls deep in. I have found the schematic but it doesn't tell me what the trannys are. Thanks All for any help you can give. Jon Link to comment Share on other sites More sharing options...
L5Larry Posted May 27, 2016 Share Posted May 27, 2016 A good source of supply for amp restorations parts is Antique Electronics Supply (tubesandmore.com). They might be able to help you ID what exactly you need. Another great source of knowledge and information is Aspen Pittman, owner/founder of Groove Tubes. His book, "The Tube Amp Book", is something every tube amp enthusiast should have on their bookshelf. I would shoot an e-mail to Groove Tubes and see if they have the info you need. Link to comment Share on other sites More sharing options...
stein Posted May 27, 2016 Share Posted May 27, 2016 A good source of supply for amp restorations parts is Antique Electronics Supply (tubesandmore.com). They might be able to help you ID what exactly you need. Another great source of knowledge and information is Aspen Pittman, owner/founder of Groove Tubes. His book, "The Tube Amp Book", is something every tube amp enthusiast should have on their bookshelf. I would shoot an e-mail to Groove Tubes and see if they have the info you need. What is Mr. Pittman doing these days? Last I heard, he had sold Groove Tubes to the Fender co. and was in the process of selling his amp collection. Link to comment Share on other sites More sharing options...
Beckroth Posted May 28, 2016 Share Posted May 28, 2016 Mercury has one listed for the 19RVT, but it's like $160 and is obviously not original. At least it should work! Also Ted Weber sells a ton of transformers but it can be tedious to go through and look at everything because they don't have a master list of what fits what. At least not that I've found. Good Luck Link to comment Share on other sites More sharing options...
badbluesplayer Posted May 31, 2016 Share Posted May 31, 2016 If it was me I'd try to figure out whether the transformer that's in there now is o.k. If the mounting holes don't line up then you'll have to figure out how to mount it properly. If you have the right voltage on the red wire then you're likely to be just fine as long as the transformer doesn't get hot when you run it flat out. It should be about 300v on pin 6 of the rectifier tube. You can also identify the transformer from the codes on it and try to figure out if that's suitable. Is this the right model? Link to comment Share on other sites More sharing options...
Cam in alberta Posted May 31, 2016 Share Posted May 31, 2016 I just spent 2 hours trying to add pics. Those will have to wait until there my computer savy daughter gets here tomorrow. the markings on the transformer of my GA 19 RVT are. TF 18 P 524 63 13 The 63 is for the year 13 is for the week of production As a comparison my GA 8T transformer markings are TF-8A-P 9966244 (year 62 week44) pics to follow they both bolt into the same holes but the TP 18 p is almost twice as thick. Link to comment Share on other sites More sharing options...
L5Larry Posted May 31, 2016 Share Posted May 31, 2016 TF 18 P 524 63 13 The 63 is for the year 13 is for the week of production "524" is the manufacturer..... Triwec Tranformer Link to comment Share on other sites More sharing options...
badbluesplayer Posted May 31, 2016 Share Posted May 31, 2016 The TF 18 P is the correct power transformer for that amp according to the schematic I posted above. Do the mounting holes line up with the holes on the chassis? Link to comment Share on other sites More sharing options...
Cam in alberta Posted June 1, 2016 Share Posted June 1, 2016 These are the pics: GA 19RVT GA 8T Link to comment Share on other sites More sharing options...
badbluesplayer Posted June 3, 2016 Share Posted June 3, 2016 Jon - It looks like it's got the original transformer in there. Is everything working o.k.? How does it sound? When they changed the filter caps they should have changed any other electrolytic caps, like the bypass caps. If you shoot a few pics of the inside I can see if everything looks o.k. in there. Link to comment Share on other sites More sharing options...
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