Description:
100% Brand New and High Quality
One pair KSA50 KRELL50hifi Power amplifier PCB (include 2 channle bare PCB)
Each PCB size: 180 * 90MM, thick 2MM, the current alignment optimization.
KSA50 classic US machine HIFI line production,
PASS system also said people, KSA50 line of good students, non-ordinary machine can than.
Set noise ratio quite good.
Debugging instructions:
1: After solder all of the components and installed with heatsink. Check whether has any mistake carefully.
2: Transformer primary series one about 50W bulb (this protect the tube if has mistake).
3: Adjust R105, with a multimeter test, a ground, a speaker then lost, the output is: 0V.
4: Adjust R126, to make the Voltage "V1" on R201 (R201.202.203 or 204 are all ok). I = V1 / R201. Usually, the "I" about 600ma-1000ma. Will be ok.
5: Repeat setp 3.
6. After power on about 50 minutes. Repeat step3. Step4. Step5. After power on about 2 hours. Repeat step3. Step4. Step5 again.
Package Included:
2 x Bare PCB