Electronumpty's Bigbottle MC phono blowout!

[smangus]

so tested the tranny 9v windings read 9.6v and 19.23v across the 2

165v winding reads 176.4v - seems too high so is it borked?

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[Barry]

Are those figures "off load"?

[smangus]

If you mean not connected to the PCB etc then yes.

[Barry]

They are about 7% higher when not drawing current, which is not unusual.

[Bigman80]

Yep, looks like you have a short, as Alan said.

That could be a right pain to find

[smangus]

They are about 7% higher when not drawing current, which is not unusual.

Ah ok thanks for that, so for 165v that puts it at 176.56v which is almost dead on , that's a relief as when it heated up so much I was worried I'd blown it .

[smangus]

Yep, looks like you have a short, as Alan said.

That could be a right pain to find

No doubt, me and my bright ideas! lol . Had a good look at the bottom of the board and nothing stood out to my eyes under a magnifier. will check again but hard to know where to start. At least it soundslike I don't need a new traffo so every cloud etc.

[Bigman80]

No doubt, me and my bright ideas! lol . Had a good look at the bottom of the board and nothing stood out to my eyes under a magnifier. will check again but hard to know where to start. At least it soundslike I don't need a new traffo so every cloud etc.

It will be something blatantly obvious when you find it.

[smangus]

It will be something blatantly obvious when you find it.

I love the encouragement

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[Bigman80]

I love the encouragement

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Hahaha, I've been there mate. A stray bit of solder just touching another and it send everything to shit.

Luckily, I got Alan on the doorstep.