chrisn
pfm Member
Completed a pair of -ve 24V ALWSRs acouple of months ago and they tested fine
Wired them up today with a pos 24V pair to make a PS for an Exposure pre
Confidently switched on. Smoke and burning from one of the neg boards
I had connected the power input -ve 35V and ground the wrong way around
I had just copied the input ground in the same way as the positive board which is wrong for neg boards
Anyway tested one correctly connected, it only produces -ve 11.5V, the other produced more smoke and has a burnt LM337 and 100kR next to it
Any ideas? My level of expertise means they go in the bin
I'd welcome any help to see if they can be sorted out
https://alw-audio.co.uk/?page_id=704
Wired them up today with a pos 24V pair to make a PS for an Exposure pre
Confidently switched on. Smoke and burning from one of the neg boards
I had connected the power input -ve 35V and ground the wrong way around
I had just copied the input ground in the same way as the positive board which is wrong for neg boards
Anyway tested one correctly connected, it only produces -ve 11.5V, the other produced more smoke and has a burnt LM337 and 100kR next to it
Any ideas? My level of expertise means they go in the bin
I'd welcome any help to see if they can be sorted out
https://alw-audio.co.uk/?page_id=704