ONN M23146-MT / 515C90104M09 Main Board for 100012588

ONN M23146-MT / 515C90104M09 Main Board

Location: 00i5

This replacement main board is designed for ONN TVs using model number 100012588. The main board handles video processing, input/output control, system logic, and power distribution — making it a critical component when the TV powers on but exhibits no picture, unstable operation, or other system failures.

Part & Board Numbers

• Part Number: M23146-MT
• Manufacturer Board Number: 515C90104M09
• Alternative / Visible Board Identifiers (may appear on label):
  • MT90104-ZC01-01
  • M09

Important: Always match the part or board number printed on your original board. Matching by model number alone may not guarantee compatibility.

Compatible TV Model

• ONN 100012588

Other TVs that use the same board configuration may also be compatible — verify board numbers before ordering.

Common Symptoms a Faulty Main Board May Cause

• TV powers on but shows no picture
• No input detection or no output despite correct source and cables
• Frequent freezing, reboot loops, or total black screen
• No audio or distorted sound though correct input is selected
• Unstable behavior — random shutdowns or no response to remote/front-panel controls

These issues may also stem from other components (power supply, panel, T-Con, etc.). We recommend verifying failure before ordering a replacement board.

Installation & Handling Guidelines

• Unplug the TV and wait several minutes to let internal capacitors discharge before servicing.
• Use anti-static (ESD-safe) precautions when handling circuit boards.
• Carefully disconnect and later reconnect all ribbon cables and connectors ensuring correct alignment and full insertion.
• Avoid forcing connectors or bending the board to prevent damage.

Condition & Quality

• Professionally inspected and tested for proper operation.
• Guaranteed functioning replacement when installed correctly.

Warranty & Returns

• Warranty: 180-Day Warranty.
• Returns accepted if the board is unmodified, undamaged, and properly installed.
• Please retain your original board until the repair is verified successful.

Shipping

• Ships from Brighton, TN (your standard shipping facility).
• Secure packaging to protect the board during transit.
• Expedited shipping options available at checkout, if selected.

If you’re unsure whether this is the correct board for your TV or need help confirming compatibility — feel free to contact us before ordering. We’re happy to assist to ensure you receive the right part.