As soon as i plug the rca's into the amp it will draw excessive current..
All rca ground shieds from the jacks themselfs to the board are intact any suggestions?
All rca ground shieds from the jacks themselfs to the board are intact any suggestions?
With nothing connected to the amplifier, what is the resistance between the RCA shields and the B+ terminal of the amp?
Will it draw excessive current with no speakers connected?
With the amp powered up, including remote, what is the DC voltage on the RCA shields? Black probe on the amp ground and red probe on the shield, no RCAs or speakers connected.
With the amp powered up, including remote, what is the DC voltage on the RCA shields? Black probe on the amp ground and red probe on the shield, no RCAs or speakers connected.
Amp still draws excessive current qith no speakers hooked up..
With black probe on ground and red probe on Shields I have 12.70 volts
With black probe on ground and red probe on Shields I have 12.70 volts
What's the resistance between the RCA shield and the non-bridging speaker terminals?
No RCAs plugged in.
No RCAs plugged in.
With the black probe on a non-bridging speaker terminal, do you have both positive and negative rail voltage as well as positive and negative regulated voltage on the power supply terminals of the op-amps?
Check all of the op-amps to see if any have more than a fraction of a volt on any of the pins other than 4 and 8.
Ok all op-amps are NJM4558LD I have the same voltages on all of them..
Pin 1:24.18
Pin 2:12.04
Pin 3:12.01
Pin 4:12.18
Pin 5:0.88
Pin 6:12.02
Pin 7:12.04
Pin 8:10.98
I replaced my batteries in my multimeter since they were getting low and this is what i have now on all op-amps
Pin 1:24.18
Pin 2:12.04
Pin 3:12.01
Pin 4:12.18
Pin 5:0.88
Pin 6:12.02
Pin 7:12.04
Pin 8:10.98
I replaced my batteries in my multimeter since they were getting low and this is what i have now on all op-amps
When measuring the voltage (unless otherwise instructed - for this amp), place the black probe on one of the non-bridging speaker terminals.
Are you sure that all of the op-amps had the same voltage on pin 5?
Are you sure that you have the pin numbering right? It appears that they're reversed.
Are you sure that all of the op-amps had the same voltage on pin 5?
Are you sure that you have the pin numbering right? It appears that they're reversed.
Ok with the black meter probe on non-bridging speaker terminal this is what i have on the op-amps
Pin 1:-0.22
Pin 2:0.06
Pin 3:0
Pin 4:-12.91
Pin 5:0
Pin 6:0
Pin 7:0
Pin 8:12.10
Pin 1:-0.22
Pin 2:0.06
Pin 3:0
Pin 4:-12.91
Pin 5:0
Pin 6:0
Pin 7:0
Pin 8:12.10
With no power applied and no RCAs plugged in, what is the resistance from pin 8 of the op-amps to the heatsink and to the amplifier's ground terminal?
From ground terminal to rca shiles i get 212.6 ohms
From rca shields to the heatsink i get 212.8 ohms
From rca shields to the heatsink i get 212.8 ohms
what is the resistance from pin 8 of the op-amps to the heatsink and to the amplifier's ground terminal?
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