For Samsung Galaxy A42 A426B Replacement Mainboard Flex Cable The Repair Plus
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Estimated delivery · Royal Mail Tracked 482–3 working days
- Order placedToday
- DispatchedSame day
- At your door2–3 days
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Phone parts are delicate. We recommend fitting by a qualified repair technician — damage caused during fitting is not a product fault. Need help choosing the right part? Call 07425 443625 or email info@therepairplus.com (Mon–Fri 10:00–18:00). Repair shop? Open a trade account.
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The Repair Plus Mainboard Flex Cable for Samsung Galaxy A42 5G is a brand new, OEM standard mainboard flex cable for the Samsung Galaxy A42 5G (SM-A426B). It fixes charging and USB data faults caused by a torn or failing main board to sub-board link, and is shipped the same day from Manchester when you order before 4pm, Monday to Friday.
Key features
- Restores the main link: reconnects the main board to the lower sub-board that carries the charging port.
- Made for the Galaxy A42 5G: OEM standard length, bends and connector positions for this model.
- Fixes several faults at once: a single replacement can cure charging, data and signal problems that start in this cable.
- Press-fit connectors: clips on at both ends with no soldering.
- Tested before dispatch: each cable is checked before it leaves Manchester.
Specifications
| Part | Mainboard to sub-board flex cable |
|---|---|
| Compatible model | Samsung Galaxy A42 5G (SM-A426B) |
| Condition | Brand new |
| Quality | OEM standard |
| Fitting | Connector fit, no soldering |
| Dispatch | Same day before 4pm, Monday to Friday, from Manchester, UK |
| Returns | 30 days |
Compatibility
Fits the Samsung Galaxy A42 5G (SM-A426B). It does not fit the 4G Galaxy A41 or the Galaxy A52 series. Samsung reuses similar names across the A series, so check the model number in Settings > About phone before ordering: it should read SM-A426B followed by a region letter.
Signs your mainboard flex has failed
- The phone does not charge even after a new charging port.
- A computer no longer sees the phone over USB.
- Signal or microphone problems started after a drop or earlier repair.
- The cable is creased, torn or has lifted from its connector.
To fit it, remove the back cover and inner covers, disconnect the battery, then unclip the old flex at both ends. Route the new cable along the same path so it is not pinched when the covers go back on.
Why buy from The Repair Plus
- Same-day dispatch when you order before 4pm, Monday to Friday.
- UK stock, shipped from Manchester.
- Every part tested before dispatch.
- 30-day returns.
- Trusted by DIY repairers and independent repair shops.
Frequently asked questions
Will this mainboard flex cable fit the 4G Galaxy A41?
No. It is made for the Samsung Galaxy A42 5G (SM-A426B) only. The 4G Galaxy A41 uses a different part.
Will a new mainboard flex fix my charging problem?
Often, yes, if the port itself is fine. If a new charging port did not help, this cable is the next part to check.
Is it hard to fit?
It is one of the easier internal repairs. The cable clips on at both ends, with no soldering, once the back and inner covers are off.
How fast will it arrive?
Orders placed before 4pm, Monday to Friday, are dispatched the same day from Manchester.

