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Author Topic: Power Transformer took a dump?  (Read 3935 times)
nickm57
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« on: December 18, 2009, 01:25:36 PM »
I built the amp about 18 months ago.

Now this amp has over 300 shows to it's credit and my main giging amp.
It was used  on a Major Australian musical for 8 shows a week for 3 months.

Tonight power up----> main power fuse is blown????another fuse same. no valves same..... Had to use another amp for the show. Angry

Just got home from the show, had a look does not smell good.  I'll check but I'm tired and not willing to go further after a show. Cry

Anyone experience problems with the PT?
I know not many other users will have put that much mileage on an amp.
But my 1964 Fender has never failed in this area (that is 45 years old).
« Last Edit: December 18, 2009, 02:01:06 PM by nickm57 » Logged
JD0x0
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« Reply #1 on: December 18, 2009, 05:26:57 PM »
Pull the amp out of the cab and take a look at all the components. Make sure you didnt burn a cap or resistor up. If everything checks out i would probably suspect the PT. Which in that case contact Nik, he will probably offer to ship a new PT over to you.

I havent heard of these amps blowing transformers that often so i would qualify 18 months for transformer life is too short and it probably had a defect
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mcinku
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« Reply #2 on: December 18, 2009, 09:02:25 PM »
Well, my friends OTS had the same symptoms and it was a PT issue. In his case 345-0-345 secondary was fried.
I informed Nik and he send me a new one, which I replaced.
BTW the current PTs are bigger than older ones, so I assume the new one will definitely last forever.

My OTS still has the original PT and it works no problem. I guess sometimes some trannies just fail.


BTW here's the picture I took when I took out the old PT. Guess which one is the new one.  Wink

* OTS_PT.JPG (123.92 KB, 1024x768 - viewed 719 times.)
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casken
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« Reply #3 on: December 28, 2009, 11:43:19 PM »
I had one go bad about a week or two after I got mine (complete build from Ceriatone).  They sent a new one out and no problems since.
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