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F-41

TROUBLESHOOTING & REPAIR

F-41

OVERVOLTAGE PROTECTION DC TRIGGER CIRCUIT TEST (cont.)

FIGURE F.18 - POWER BOARD TEST POINTS

309

310

212A

301 302

 

 

POWER BOARD

 

 

 

L8033

 

 

J7

J14

 

J6

275D

 

313

311

211A

 

501

 

305

 

 

 

 

 

 

504

 

 

 

 

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8.Test for 15 VDC supply voltage between leads 302 and 275D on Power Board.

a.If 15 VDC is present, test is OK. Go to step 9.

b.If 15 VDC is not present, the Power Board may be faulty. Check for 18 VAC input voltage at lead 501 and 504 (J7).

If 18 VAC is present the Power Board is faulty and must be replaced.

9.Test for 0-1 VDC (DC trigger circuit) between leads 305 and 275D on Power Board.

a.If 0-1 VDC is present, DC trigger circuit is oper- ating properly.

10.Test for 0-1 VDC between leads 301 and 275D on Power Board.

a.If 0-1 VDC is present, AC trigger, Control Board, and Power Board are operating proper- ly.

b.If 15 VDC is present, go to Thermal Protection AC Trigger Circuit Test .

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b.If 15 VDC is present, go to step 10.

V300-PRO

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Lincoln Electric SVM105-B service manual 309 310

SVM105-B specifications

The Lincoln Electric SVM105-B is a state-of-the-art welding machine that represents a leap forward in welding technology, designed for both professionals and enthusiasts in the welding industry. This versatile machine combines robust performance with user-friendly features, making it suitable for a wide range of welding applications.

One of the key features of the SVM105-B is its advanced inverter technology. This allows for a lightweight design without compromising on power output. The inverter technology ensures a stable arc and precise control, enabling consistent weld quality across various materials, including mild steel, stainless steel, and aluminum. This feature is particularly beneficial for users who demand exceptional performance in both thin and thick materials.

The SVM105-B also boasts an impressive output range, typically between 10A to 105A, allowing for adaptability to different welding tasks. Its ability to seamlessly switch between DC and AC modes makes it an ideal choice for professionals working in diverse environments, facilitating operations such as TIG and stick welding. This versatility is further enhanced by its compatibility with various electrode types, ensuring a more efficient and effective welding process.

User safety and comfort have not been overlooked in the design of the SVM105-B. Equipped with an efficient cooling system, this machine effectively manages heat during prolonged use, ensuring durability and longevity. Additionally, its intuitive digital display provides real-time feedback on settings, making it easier for users to monitor parameters and make necessary adjustments on the fly.

The SVM105-B is built with portability in mind. Its compact and lightweight design makes it easy to transport, enabling welders to bring their equipment to job sites without hassle. Furthermore, the machine features sturdy handles that contribute to its ease of maneuverability, supporting the demands of both inside workshops and outdoor projects.

Moreover, Lincoln Electric places a strong emphasis on quality and reliability, and the SVM105-B is a testament to this commitment. The machine is constructed from durable materials designed to withstand the rigors of daily use, ensuring it remains a staple in any welder's toolkit for years to come.

In conclusion, the Lincoln Electric SVM105-B stands out with its combination of advanced inverter technology, versatile output, user-friendly interface, and robust construction. Whether for professional or hobbyist use, this welding machine meets a wide array of welding needs while providing excellent performance and durability.