wiring up a transformer (brian gts kit)

[MJL21193]

Does the PS board have two terminal blocks for AC in? Each with two terminals? That's the way it looks in your rather blurry photo.

 

[fusion]

yes thats correct

 

[MJL21193]

Did you check the output from the transformer? What is the voltage when you measure black to red?

 

[fusion]

25

 

[MJL21193]

You have it wired as in post #10 above? That's correct.

Did you assemble the PS boards? Are you sure everything is correct?

 

[audio1st]

Hi fusion,
2 things it could be, are the caps connected with the correct polarity and have you got the 1r0 and 2k2 ohm resistors in the correct locations (2k2 under big cap)?😕

 

[danielwritesbac]

Ever watch Dr. Who?? What does he do when something electronic doesn't work? 😉
Check your polarity, for the big caps and for the power supply leads.

P.S. The fuse is a great idea.

 

[fourspeed]

I have attached a picture which should give you a clue how it could look..

I found this thread while searching for the proper way to wire Brian's power supply. His information that came with the kit was a bit vague. Your drawing was VERY useful! Thank you.

Mine did not hum or get hot or any other nasty stuff. The LED came on though. 🙂

 

[xiphmont]

If a cap gets too hot to touch, it can easily be shot regardless of 'deformities' or not. Most of the fried caps I find in devices are not visibly damaged in any way. A cap will only deform or 'vent' as a last-ditch safety feature to prevent them exploding and causing serious injury, but the device is fried for good long before it gets to that point.

Even if they're not dead, they're likely derated, or just ate a good chunk of their service life. In my own projects, I would not trust any electrolytic that's been stressed like that. In terms of circuit reliability, electrolytics are usually the weak point, the component that will wear out and fail first anyway.