elr psu wo.

[m3vuv]

hi all im building this psu from an old magazine issue i found,the issue i have is after building it, c9 exploded and r23 fried,is there an issue with b1 ie bridge rectifier as it seems to have strange pinouts,is it a ballsup?,cheers in advance.

[m3vuv]

as in the pinouts of br1,seems wrong to me?

[m3vuv]

b1 sorry seems to have weird pinouts,is nthat the issue?

[xavier60]

BR1's pinout is unusual,
https://www.bing.com/images/search?q=inline+bridge+rectifier&form=HDRSC2&first=1&tsc=ImageBasicHover

Added: If you have a round type, the pins might be able to be bent to the correct position.

[m3vuv]

thatsw exactlly my issue,ie is it a missprint,i bent the legs of a bridge rectifier to natch the silkscreen but its wierd as to why the cap blewup,almost like the polarity was reversed ?

[xavier60]

I can't see a link between BR1 being incorrectly wired and the other damage.
Harrison/floating designs can be tricky to make sense of.
Replace R23 with something higher like 470 ohms for now.

Extra: mains to the power transformer should be removed for initial tests.
Check the control rails and the reference voltage.
The outputs of both opamps should be high.

[m3vuv]

this is the only datasheet i can find for b1,should both center legs both go to ac?,i wonder if the pdf is a missprint?,would that cause the magic smoke?.

[m3vuv]

also forgot to mention the small transformer powering b1 got hot as well,as if it was shorted.

[xavier60]

this is the only datasheet i can find for b1,should both center legs both go to ac?,i wonder if the pdf is a missprint?,would that cause the magic smoke?.

Yes, if that's what you have.
This shows what suits the PCB, https://www.ebay.es/i/142969826800
Show us a photo of what you have there.

[xavier60]

Or The orientation of the internal diodes can be checked with a DMM on Diode test, better if it makes diode beeps.