Hi,
Got this sub woofer from storage but the blue led power not on. So i suspect something gone bad at the power board. Noticed a dual op amp 4558d jrc 0058t . Upon checking on google, vcc is at pin 8, ground at pin 4.
Also googling on those 3pcs 5 pin audio power amp tda2030al screwed to heat sink.
Pin 5 is power supply and ground at pin 3.
I saw the 230vac transformer output 12v thru the blue wires to the pcb. I wondered if it is safe to use my dmm and probe the above mentioned pins to check on live voltage.
The problem is since i am not able to find any schematic, i don't have any idea what voltage to expect. Can anyone help me on this and kindly suggest or give guidance.
Thank you.
Got this sub woofer from storage but the blue led power not on. So i suspect something gone bad at the power board. Noticed a dual op amp 4558d jrc 0058t . Upon checking on google, vcc is at pin 8, ground at pin 4.
Also googling on those 3pcs 5 pin audio power amp tda2030al screwed to heat sink.
Pin 5 is power supply and ground at pin 3.
I saw the 230vac transformer output 12v thru the blue wires to the pcb. I wondered if it is safe to use my dmm and probe the above mentioned pins to check on live voltage.
The problem is since i am not able to find any schematic, i don't have any idea what voltage to expect. Can anyone help me on this and kindly suggest or give guidance.
Thank you.
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