Description
BK Precision 1743 DC Power Supply 0-35V 0-6A For Parts Bad Motherboard
The BK Precision 1743 is a benchtop linear adjustable DC power supply rated for 0–35 VDC and 0–6 A output, featuring dual LED digital meters for simultaneous voltage and current readout, coarse and fine adjustment knobs for both voltage and current, and CV/CC (constant voltage / constant current) operating mode indicators. This unit is being sold AS-IS for parts or repair only. It powers on but the motherboard (control board) is faulty — the output is stuck at a constant ~51 VDC and is not adjustable. It does not function as designed.
Specifications & What's Included
- Model: BK Precision 1743
- Rated output voltage: 0–35 VDC (not functioning — see condition)
- Rated output current: 0–6 A (not functioning — see condition)
- Known fault: Bad motherboard/control board; outputs constant ~51 VDC, not adjustable
- Dual LED digital displays: voltage (left) and current (right)
- Front panel: Coarse and Fine knobs for voltage and current, CV and CC indicator LEDs, power toggle switch, output binding posts (0–35V, 0–6A labeled)
- Input voltage: 120V AC (3.5 A / 30mm fuse) or 220/230/240V AC (1.75 A / 30mm fuse) — selectable
- Internal components visible: Jamicon 18000µF 50V main filter capacitor, toroidal power transformer, control/motherboard PCB, relay components
- Form factor: Benchtop with carry handle
- Rear: Large aluminum heat sink fins, AC power cord (attached)
- Includes: Unit with attached AC power cord only — no manual or accessories
Applications
The BK Precision 1743 is a single-output linear regulated DC power supply in the class commonly used on electronics workbenches, in university and vocational training labs, and in R&D environments where a clean, low-noise adjustable DC source is needed for circuit testing, component characterization, and small-scale device powering. Linear supplies like the 1743 are favored over switching supplies in sensitive analog and RF work because they produce minimal output ripple. This particular unit — with its faulty control board and unregulated ~51V output — is well-suited for technicians seeking a parts source: the toroidal transformer, large filter capacitor, heat sink assembly, front-panel meter displays, knobs, and chassis are all potentially serviceable components. It may also appeal to hobbyists or repair shops who can diagnose and replace the control board to restore full functionality.
This BK Precision 1743 Adjustable DC Power Supply is being sold AS-IS for parts or repair due to a bad motherboard. The unit powers on but outputs a constant ~51 VDC and is not adjustable — it does not function as intended. It is not guaranteed to work and is suitable only for repair, parts salvage, or as a chassis/transformer donor. Internal photos are included showing the control board, transformer, and Jamicon 18000µF 50V main filter capacitor. The exterior shows typical wear consistent with lab use. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
BK Precision |
Model: |
1743 |
MPN: |
1743 |
Type: |
Adjustable Linear DC Power Supply |
SKU: |
47881 |
Seller Notes: |
Unit only — power cord attached. No manual or accessories included. |
Output Voltage: |
0–35 VDC (rated; not functioning — see condition) |
Output Current: |
0–6 A (rated; not functioning — see condition) |
Known Fault: |
Bad motherboard; outputs constant ~51 VDC, not adjustable |
Display Type: |
Dual LED digital meters (voltage and current) |
Input Voltage: |
120V / 220/230/240V selectable |
Fuse – 120V Operation: |
3.5 A, 30mm |
Fuse – 220/230/240V Operation: |
1.75 A, 30mm |
Form Factor: |
Benchtop |
Power Requirements: |
120V AC or 220–240V AC, 50/60Hz |
Country/Region of Manufacture: |
Japan |
Condition Notes: |
BK Precision 1743 DC Power Supply sold AS-IS for parts/repair. Bad motherboard — unit powers on but outputs a constant ~51 VDC and is not adjustable. Not guaranteed functional. Internal photos included. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
