Replacement Power Supply Circuit Board for Onan® Generators Replaces Onan Part Numbers: 300-3763, 300-3763-01, 300-3763-02, 300-3763-03
This high-performance replacement power supply circuit board is engineered for full compatibility with select Onan® generators, delivering long-lasting reliability and seamless operation. Built using double-sided plated thru-hole technology, it virtually eliminates the risk of intermittent electrical connections, ensuring stable power output in demanding conditions.
The board comes equipped with an attached wire harness for quick and hassle-free installation, making it an excellent upgrade or replacement choice for generator maintenance and repair.
Features & Benefits
Compatible with Onan® Generators – Replaces part numbers: 300-3763, 300-3763-01, 300-3763-02, and 300-3763-03
Attached Wire Harness – Simplifies the installation process
Durable Design – Built for reliable performance under continuous use
Limited 3-Year Warranty – Ensures peace of mind and product quality
This replacement circuit board offers a dependable, high-quality solution to keep your Onan® generator running smoothly and efficiently.
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Refund Policy
UsedRVParts.ca is committed to providing transparent, fair, and reliable purchasing terms for both new and used RV parts. Because many items are specialty or final-sale by industry standard, we maintain a clear and firm return policy. Please review all terms before placing your order.
1. Special Order Products – No Returns or Refunds
The following items are non-returnable and non-refundable under all circumstances:
Special orders
Non-stocked items
Obsolete or discontinued parts
Custom-made or custom-requested items
Batteries
Once an order is confirmed and payment is processed, the sale is final. Please ensure compatibility before purchasing.
2. Electronic Circuit Boards – Final Sale
All electronic circuit boards are final sale.
No returns, regardless of installation status
No refunds or exchanges
Electronic components are sensitive items that cannot be resold once shipped.
3. International Orders & Transit Times
International shipments typically arrive within 2–7 business days from the time of payment.
Buyers are responsible for all customs, duties, taxes, and import fees charged by their country. Duties and tariffs apply only to U.S. customers purchasing used RV parts. U.S. customers purchasing new RV parts do not incur duties or tariffs, as these items ship directly from U.S. warehouses.
4. Returns for New Parts (Limited Eligibility)
Returns for new parts are accepted ONLY if all conditions below are met:
Item is unused, in new condition, and contains original packaging, manuals, and all included components
Item passes inspection upon return
Return is requested within 14 days of delivery (industry standard)
Additional terms:
20% restocking fee applies to all standard returns
Customer is responsible for all return shipping costs
Original shipping fees are non-refundable
Freight/LTL items are non-returnable, including:
RV refrigerators
Awnings
Air conditioners
Ovens/stoves
Oversized appliances
Oversized RV Parts
5. Generators – Non-Returnable if Fueled
New generators cannot be returned if any oil or gasoline has been added. For warranty matters, customers must contact the generator manufacturer directly.
6. Used RV Parts – Strict No Return Policy (No Exceptions)
All used RV parts are sold under a strict “No Returns – No Refunds – No Exceptions” policy.
6.1 Sold “As-Is”
Used parts are sold in their present condition
All parts are tested, photographed, and verified before sale
No warranties, guarantees, or exchanges are offered
6.2 Buyer Responsibility
The buyer is solely responsible for verifying:
Fitment
Compatibility
Model numbers
Measurements
Required specifications
6.3 Final Sale Conditions
Used parts cannot be returned for ANY reason, including:
Incorrect fitment
Buyer error
Installation issues
Accidental damage
Misuse, modification, or improper handling
7. Shipping Damage – Claims Must Be Filed by Buyer
All items are professionally packaged before shipping
UsedRVParts.ca is not liable for damage caused during transit
If an item arrives damaged, the buyer must file a damage claim directly with the carrier
We will assist by providing photos, packaging details, or other requested documentation
8. Limitation of Liability
UsedRVParts.ca is not liable for:
Indirect, incidental, or consequential damages
Property damage, personal injury, or financial loss resulting from product use
Costs related to installation, removal, or diagnostic labor
9. Indemnification
By purchasing from UsedRVParts.ca, the customer agrees to indemnify and hold harmless the company, its owners, and employees against any claims, disputes, or damages arising from:
Installation
Product usage
Resale or modification of purchased items
10. Agreement to Terms
By completing your purchase, you acknowledge that you have read, understood, and agreed to this Return & Refund Policy. These terms apply to all online, in-store, phone, and special-order sales.
11. Governing Law & Dispute Resolution
This policy is governed by the laws of British Columbia, Canada
Any disputes will be resolved through binding arbitration in Kelowna, BC
Questions or Assistance?
📧 Email:cody@usedrvparts.ca 📞 Call/Text: 1-778-363-5683 We’re here to help ensure you receive the correct part the first time.
New & Updated RV Parts Inventory — Check Back Often
We’re always adding new and used RV parts to our inventory, so be sure to check back regularly.
If you don’t see the part you need today, we may still have it in stock—our internal database includes thousands of new RV parts that are not yet listed online.
Text or email us with the product number or model, and we’ll check availability for you right away.
