High-Density BGA Reballing for Fleet Hardware

Cost depends on the chip size, ball count, and board condition. Larger BGA packages with fine-pitch ball arrays require more process time. We provide a firm quote after evaluating the board and the specific BGA component. Compared to replacing a high-value industrial controller board, reballing is almost always the more economical path.

Standard BGA rework on a single chip typically completes in 3-7 business days from intake to verified return. Multi-chip boards or boards requiring pad reconstruction may take longer. A timeline estimate is provided after initial inspection.

DIY reflow methods lack the controlled thermal profiling, precise alignment, and flux management that professional BGA rework requires. Uneven heating can warp the board, cook adjacent components, or create weak solder joints that fail again within weeks. Proper reballing uses calibrated BGA rework stations with programmable thermal curves and optical alignment.

No. A reflow may temporarily restore contact by re-melting oxidized solder, but it does not replace degraded solder alloy or remove intermetallic compounds that caused the original failure. A proper reball replaces the solder spheres entirely, giving the joint a fresh metallurgical bond.

Yes. While OHMz primarily handles business and industrial equipment, individual equipment owners are welcome to inquire. Contact us with your board model and failure symptoms and we will evaluate the rework path.

Yes. Printer formatter boards, scanner mainboards, and similar imaging controllers often use BGA-packaged processors that develop solder fatigue from years of thermal cycling. These are excellent candidates for professional reballing.

Lifted pads can often be reconstructed using micro-soldering techniques we bridge to nearby trace points or use pad-repair epoxy and copper foil. However, if a large number of pads are destroyed or the damage extends into internal board layers, the board may be rejected. Each case is evaluated individually.

Signs of botched rework include visible scorching around the chip, misaligned components, excess flux residue, or missing nearby SMD parts. We perform high-magnification inspection to assess the full extent of prior damage before providing a quote.

Yes, this is a classic BGA solder fatigue symptom. As the board heats up, thermal expansion can separate cracked solder joints under the chip, causing intermittent open circuits. When the board cools, the connection may temporarily re-establish, creating a "works cold, fails hot" pattern.

No. If the root cause is a physical solder joint failure under a BGA package, no software or firmware change can resolve it. Firmware updates address logic bugs, not broken electrical connections. A proper diagnosis will distinguish between a firmware issue and a physical BGA fault.

We isolate the power rails first checking voltage stability and ripple under load. If the power delivery is clean but the chip still behaves erratically, the focus shifts to the BGA solder joints. Thermal testing (localized heating/cooling of the BGA package) can confirm whether the fault is mechanical or electrical.

Yes. Depending on which chip is affected, a BGA failure can produce POST beep codes, memory errors, or device-not-found messages. The key indicator is whether the fault pattern changes with temperature or physical pressure on the chip.

We can perform bench-level power and signal checks on the board alone. However, full functional verification confirming that all peripherals, ports, and boot sequences work correctly is best done with the host equipment. If the host is not available, we test to the maximum extent possible on the bench.

Low-frequency intermittent faults are the most challenging to isolate. We use extended thermal cycling and vibration testing to try to reproduce the failure. If the fault cannot be triggered during diagnosis, we may recommend returning the board with the host equipment for long-duration monitored testing.

Use a smartphone with good lighting natural daylight or a desk lamp works well. Take a clear, focused photo showing the entire board and a close-up of the BGA chip area. Include any visible marks, discoloration, or previous rework residue. The more detail you capture, the more accurate our initial assessment can be.

It helps but is not required. A clear photo of the chip and the board model number is usually sufficient. If the chip markings are worn or unreadable, we can identify it during intake inspection.

If the BGA component has an internal silicon failure, reballing will not fix it the chip must be replaced. We can source a replacement BGA component (new or donor) and perform a full chip-swap rework, which includes removing the dead chip, preparing the pads, and mounting the replacement with a fresh ball array.

We perform non-destructive testing first checking power rails, clock signals, and resistance values at the BGA pads. If the electrical signature suggests the silicon is functional but the connections are intermittent, reballing is the likely path. If the chip shows internal shorts or missing signals, replacement is indicated.

We use stereo microscopy at up to 45x magnification for pad inspection after chip removal. This reveals micro-cracks, lifted pads, and trace damage that are invisible to the naked eye, ensuring the land pattern is fully sound before a new component is mounted.

It depends on how many pads are affected and whether the connecting traces run on surface layers. A few lifted pads can be reconstructed. If a large section of the BGA footprint is destroyed especially under a fine-pitch chip the repair may be uneconomical. We assess this during the rework process and communicate before proceeding.

Yes. Flux residue can be hygroscopic (moisture-absorbing), conductive, or corrosive over time, leading to parasitic leakage between BGA balls or gradual trace corrosion. Proper post-rework cleaning is essential for long-term reliability and is a standard part of every OHMz BGA rework job.

We use a multi-stage process that includes solvent cleaning specific to the flux chemistry used, followed by ultrasonic or vapor-phase cleaning depending on the board type. The goal is a residue-free surface that passes high-magnification inspection.

X-ray inspection is the gold standard for verifying BGA joint quality it reveals hidden voids, bridging, or insufficient solder volume that optical inspection cannot see. We use X-ray verification where the board value and joint density warrant it, providing visible proof of joint integrity.

We run multiple power-on/off cycles and monitor behavior across temperature transitions. The goal is to confirm that the reworked joint remains stable under thermal expansion and contraction the exact condition that caused the original failure.

There is no minimum we handle individual boards as well as batches of 50 or more. For fleet programs with a known recurring failure (e.g., a specific POS terminal model with GPU BGA fatigue), we can establish a standing rework protocol and predictable turnaround schedule.

Yes. Batch BGA rework benefits from process efficiency identical chip types, consistent thermal profiles, and streamlined testing. We provide volume-adjusted pricing for fleet programs. Contact us with your board model and estimated monthly volume for a program quote.

Depots send us boards with a BGA fault identified. We perform the rework, verify the result, and return the board with technical documentation. The depot handles their own customer-facing communication. We operate as a silent backend partner your customer relationships remain yours.

A preliminary diagnosis is helpful but not required. If the depot suspects a BGA fault based on symptoms, we can perform the full diagnosis and confirm before rework. If the fault turns out to be non-BGA, we advise the depot accordingly and can often still perform the needed repair.

Board warpage means the PCB is no longer flat it has a visible bow or twist. Severe warpage prevents the BGA balls from making uniform contact with the pads during reflow. Mild warpage can sometimes be managed with adjusted thermal profiles; severe warpage makes reliable BGA mounting impossible and the board is rejected.

Yes. Even if the board itself cannot be restored, the BGA chip and other components may be salvageable for donor harvesting. We can extract working BGA components and reball them for use in repairing other boards in your fleet. This is a cost-effective strategy for discontinued hardware.

Every board is serialized at intake and tracked through diagnosis, rework, testing, and dispatch. Return shipments can be labeled with your internal asset tags, site codes, or department identifiers so the right board reaches the right location.

Yes. We provide inventory storage for completed repairs, releasing them for shipment on your schedule. This is especially useful for seasonal businesses or organizations that prefer to deploy hardware during planned downtime windows.