Finding a reliable replacement power supply board is essential for restoring a large-screen TV’s performance. This guide highlights five compatible boards from trusted brands, focusing on models used in 70-inch Onn and similar sets. Each section provides a concise overview, key features, and installation notes to help you compare options and choose the right board for your repair project.
| Product | Brand | Compatible Models (highlights) |
|---|---|---|
| Onn 70" Power Supply Board | WHALAM | E021M425-J3, E021M509-B2, E021M509-A2, TV7001-ZC02-0ar |
| Lutema Television Repair Kit (TCL 43S431) | Lutema | Main Board, Power Supply, TCon, cables |
| TV Power Supply Board BN44-00874E | ITDKSTYKN | Samsung QN75Q6DRAF, QE75Q60RAT, QA75Q60RA |
| Power Supply Board TV7001-ZC02-01 | EMIHO | ONN E021M425-J3, E021M509-B2, E021M509-A2, TV7001-ZC02-0ar |
| LAMGENIE TV7001-ZC02-01 | LAMGENIE | E021M425-J3, E021M509-B2, E021M509-A2, TV7001-ZC02-0ar |
Onn 70" Power Supply Board – WHALAM
The Onn power supply board listing covers multiple internal components used in 70-inch models, primarily E021M425-J3, E021M509-B2, and E021M509-A2, alongside TV7001-ZC02-0ar. This board is designed to provide stable voltage rails for the backlight, motherboard, and ancillary circuits. Installation considerations include verifying connector layouts and ensuring compatibility with the exact open-cell or panel pairing of the TV. The board’s features emphasize reliability across common power conditions and long-term operation.
Lutema TCL 43S431 Repair Kit
This repair kit bundles major internal components for TCL models like the 43S431, including the Main Board, Power Supply, TCon, and cables. It is intended for users with basic electronics knowledge who seek to restore function when replacements are required. The kit’s effectiveness depends on matching the TV’s Open Cell/LCD Panel Number, as this internal configuration can vary by production date and factory. While comprehensive, compatibility should be confirmed before purchase.
BN44-00874E Power Board for Samsung
BN44-00874E is marketed for Samsung models including QN75Q6DRAF, QE75Q60RAT, and QA75Q60RA. The listing highlights steady power output and ease of installation with a design that mirrors the original hardware, facilitating straightforward replacement. Safety considerations include verifying proper alignment with the existing cabinet layout and connector pinouts to avoid improper mating that could affect performance or safety.
EMIHO TV Power Board – 70-Inch Compatibility
EMIHO’s power board for Haier/Onn 70-inch sets features multiple regulated DC outputs for backlight, motherboard, and audio modules. It includes protections against overvoltage, overcurrent, short circuits, and overheating, helping to prevent motherboard damage from electrical anomalies. The design emphasizes 100% device testing, high reliability, and ease of installation with a structure matched to standard mounting and interface layouts.
LAMGENIE TV7001-ZC02-01 Power Board
The LAMGENIE board is specifically described as 70-inch Onn TV compatible, aligning with models E021M425-J3, E021M509-B2, and E021M509-A2, along with TV7001-ZC02-0ar. It emphasizes stable 12V/24V outputs, minimal voltage error, and robust FR-4 construction rated for higher operating temperatures. The installation is marketed as straightforward for those replacing the original board, with fitment designed to match factory pins and holes.
XXHCML TV7001-ZC02-01 Replacement Board
The XXHCML listing covers a replacement board for 70-inch Onn/Haier sets including E021M425-J3, E021M509-B2, E021M509-A2 and TV7001-ZC02-0ar. It emphasizes compatibility and straightforward swap procedures, with attention to proper electrical connections and secure mounting. As with other boards, verification of model and panel number is crucial to ensure proper operation after installation.
Buying Guide: Key Purchase Considerations And Comparisons
- Compatibility and model matching: Confirm the exact TV model, panel/open cell number, and connector pinouts. Even slight variations can prevent a successful replacement.
- Electrical specifications: Look for stable voltage outputs, particularly for backlights and main boards. A board with tight voltage regulation reduces risk of flicker or shutdowns.
- Safety features: Prefer boards with built-in protections (overvoltage, overcurrent, short circuit, overtemperature) to safeguard the TV and user.
- Build quality and components: Boards with high-quality capacitors, MOSFETs, and FR-4 substrates tend to offer longer lifespans and better heat tolerance.
- Ease of installation: A design that mirrors the original board’s layout and mounting holes simplifies replacement and reduces the chance of connector misalignment.
- Warranty and support: Check return policies and seller support in case of compatibility questions or defects.
- Long-term availability: Consider brands with consistent stock and clear documentation to avoid future supply gaps.
- Alternative repair vs. replacement: For older sets, weigh the cost and risk of swapping multiple components against replacing the TV entirely.