FDP Forum / Transformer turning an orange color?/ 7 messages in thread.

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Tony F



Long Island, NY

When you come to fork in road take it
Sep 4th, 2017 04:24 PM        

I have a VHT special 6 and while changing a preamp tube I noticed the smaller transformer of the two (sorry Not sure what to call it) has developed an orange color on the outside. Everything works fine just never seen this before.



reverendrob

FDP Data Goon
Moderator

We all want

our time in hell
Sep 4th, 2017 06:00 PM        

Surface rust?<br />



Peegoo

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Creed

Clearwaterrrrr Revival
Sep 4th, 2017 07:28 PM        

That's the output transformer.<br /> <br /> Rub it with a white paper towel. Does the orange come off on the paper towel? If so, it's surface rust...if it's on metal. <br /> <br /> If it's on metal and the insulating paper, it's simply the factory lacquer coating changing color (yellowing) over time due to repeated heat/cool cycles. See link below.<br /> <br />



Peegoo

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Creed

Clearwaterrrrr Revival
Sep 4th, 2017 07:32 PM        

Here's an extreme case of



Peegoo

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Creed

Clearwaterrrrr Revival
Sep 4th, 2017 07:35 PM        

If that's what you have there, it's normal unless your OT is excessively overheating due to poor impedance matching, or poor ventilation, etc.<br /> <br /> If it gets too hot to touch, it may be overheating.



Tony F



Long Island, NY

When you come to fork in road take it
Sep 5th, 2017 01:09 PM        

Yep it looks just like the photo you posted. thanks<br /> <br /> **holy mother of pearl Peegoo is there anything you don't know***



Peegoo

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Creed

Clearwaterrrrr Revival
Sep 5th, 2017 02:36 PM        

I've been around the block a few times :o)<br /> <br /> And there is SO much more to learn...<br /> <br /> Cheers, Tony F!



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