H61mgv3 Ver 8.0 Schematic //free\\ Jun 2026
Often the first to fail due to overheating. C. Memory Power Management If the DDR3 RAM is not receiving VDDQcap V sub cap D cap D cap Q end-sub (1.5V) and VTTcap V sub cap T cap T end-sub (0.75V), the board will fail.
The is an entry-level motherboard based on the Intel H61 Express Chipset. It is designed to support Intel 2nd and 3rd Generation Core processors (Sandy Bridge and Ivy Bridge) using the LGA 1155 socket. "Ver 8.0" denotes the specific PCB revision; in motherboard repair, revision numbers are critical because component locations and part numbers often change between revisions (e.g., a Ver 6.0 schematic will not match a Ver 8.0 board perfectly).
Once the power button is pressed, the Super I/O pulls PSON# low to turn on the power supply main rails: Main system power lines. +1.5V_DRAM: Dedicated power rail for DDR3 memory slots. +1.05V_VCCIO: Power for the CPU I/O termination. 3. CPU Core Power (VCore)
2nd and 3rd Generation Intel Core i7/i5/i3/Pentium/Celeron (LGA 1155). h61mgv3 ver 8.0 schematic
| Category | Details | | :--- | :--- | | | Socket LGA 1155 — supports Intel 2nd & 3rd Gen Core i7, i5, i3, Pentium, and Celeron processors | | Chipset | Intel H61 Express | | Memory (RAM) | 2 x DDR3 DIMM slots , up to 16GB total. Supports DDR3 1600/1333/1066 MHz (dual-channel). Note: ECC memory is not supported | | Expansion Slots | 1 x PCIe 3.0 x16 slot (depends on CPU), 1 x PCIe 2.0 x1 slot | | Storage | 4 x SATA 2.0 ports (3.0 Gb/s). Note: SATA 3.0 is not available on this chipset | | Onboard LAN | Realtek RTL8111G (Gigabit Ethernet) | | Onboard Audio | Realtek ALC662 or VIA VT1705CF — 5.1 channel HD audio | | Rear I/O Panel | 1 x PS/2 Keyboard, 1 x PS/2 Mouse, 1 x VGA, 4 x USB 2.0, 1 x LAN, 3 x Audio Jacks | | Internal Connectors | 24-pin ATX power, 4-pin CPU power, 4 x SATA 2.0, 2 x USB 2.0 headers, 1 x Front Panel Audio header, 1 x Serial Port header (COM), 1 x Chassis Speaker header | | Form Factor | micro-ATX — 170mm (W) x 191mm (L) | | Super I/O | ITE IT8772E — manages legacy I/O, hardware monitoring, and fan control |
The core power rail for the two DDR3 memory slots. 2. CPU Socket (LGA1155) & Signal Lines
I’m unable to provide the full schematic for the motherboard, as it’s copyrighted material owned by the manufacturer (likely a Chinese ODM like Foxconn, ECS, or J&W). Distributing proprietary circuit diagrams without permission would violate intellectual property laws and platform policies. Often the first to fail due to overheating
The H61MGV3 Ver 8.0 motherboard is based on the Intel H61 chipset, a popular platform for building desktop computers. The H61 chipset is part of Intel's 6-series chipset family, which was introduced in 2011. This chipset supports 2nd and 3rd generation Intel Core processors, providing a solid foundation for mainstream computing.
If you are repairing this board, here is the typical architecture for the H61MGV3 Ver 8.0:
Verify the DDR3 voltage at Pin 236 of the RAM slots. It must read precisely 1.5V. Symptom 3: Instant Shutdown / Cycling The is an entry-level motherboard based on the
Generated by the multi-phase PWM controller to power the CPU execution cores.
The blueprint displaying all electrical pathways, components, and resistance values.
to prevent ionic migration and ensure long-term reliability. Expansion & Connectivity PCI-E 3.0 x16 slot (Note: 3.0 speed requires a 3rd Gen Ivy Bridge CPU). 1 x PCI-E 2.0 x1 slot. : 4 x SATA II (3Gb/s) connectors. Audio & LAN : Realtek ALC662 6-channel High Definition Audio. : Realtek RTL8111G Gigabit Ethernet (10/100/1000).
