Sorry if it is posted in the wrong thread, also sorry if my English is bad.
I have purchased this amplifier board from aliexpress: Amplifier PCB Link
I have purchased it knowigly, that i have dual secondary tranformer with no CT.
I have found a thread here (thanks to- @ericgibbs ) on how tomake dual rectifier circuit in order to have +v 0 -v (i cannot bridge the 2 secondarys, because voltage goes way wayy out of spec for the pcb itself. )
My problem is: when i connect a 3.5mm to a laptop it works fine and sounds good, but when i connect it to a Desktop PC the signal wire (R GND L) starts smoking and then combusts.
I suspect it may be a Grounding problem, since i dont have any.
Can anyone help me out on how to properly ground this amplifier in a Dual Rectifier setup?
Sorry, i am only getting into electronics and power supplys and etc.
I have purchased this amplifier board from aliexpress: Amplifier PCB Link
I have purchased it knowigly, that i have dual secondary tranformer with no CT.
I have found a thread here (thanks to- @ericgibbs ) on how tomake dual rectifier circuit in order to have +v 0 -v (i cannot bridge the 2 secondarys, because voltage goes way wayy out of spec for the pcb itself. )
My problem is: when i connect a 3.5mm to a laptop it works fine and sounds good, but when i connect it to a Desktop PC the signal wire (R GND L) starts smoking and then combusts.
I suspect it may be a Grounding problem, since i dont have any.
Can anyone help me out on how to properly ground this amplifier in a Dual Rectifier setup?
Sorry, i am only getting into electronics and power supplys and etc.
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