The GHD Max is the wide-plate straightener in GHD's line-up — built with broader plates to get through thick, long or curly hair faster. It's a brilliant tool when it's working, and a real miss when it isn't, because there isn't an obvious like-for-like alternative if you rely on those wide plates. The good news: the Max is repairable, most faults are a single inexpensive part, and a repair costs far less than replacing it. Here's what typically goes wrong and how it's fixed.
I've been repairing electronics for over 25 years — here's the practical guide for the Max specifically.
First — confirming it's a Max
The straightener this page covers is the GHD Max, model number S7N421 — the newer "Model S" generation, with a sliding on/off switch and noticeably wider plates than a standard GHD. The model number is on the label inside the arm.
Where it fits in the range:
The Max is essentially the wide-plate version of the Gold (S7N261) — they're closely related and share a lot, including the cable. Much of my GHD Gold repair guide applies to the Max too.
The Mini (S7N151) is the narrow-plate sibling — same family, same cable.
Because the Max has a sliding switch, it's one of the repairable models.
If you're not certain which model you have, how to find your GHD model number will confirm it.
The most common GHD Max faults
Won't heat up
The most common Max fault is the familiar one: powers on with the usual lights and beep, but the plates stay cold. This is typically a thermal fuse or heater element issue — see my guide to GHDs that won't heat up. On the Max, one thing worth knowing is that the wide plates use larger heater elements than a standard GHD, so the correct wide-plate part is essential — a generic element won't do.
Cutting out or only working when you hold the cable
The Max's mains cable can fail where it flexes near the iron, causing intermittent power. It's a common, inexpensive fix (see GHD cable faults) — and because the Max shares its cable with the Gold and Mini, it's a well-understood replacement.
Completely dead
No lights at all points to a power fault — cable, plug fuse or internal fuse. Check the free things first (GHD won't turn on) before it comes in.
One plate cold, or uneven heating across the wide plates
This one's a little more particular to the Max. Because the plates are wider, an owner will sometimes notice uneven results across the width of the plate, or one plate lagging behind the other — usually a heater element beginning to fail. On a wide-plate straightener, even heating matters even more, so it's worth putting right rather than living with patchy results (and the extra passes that come with them, which mean more heat exposure for your hair).
What a GHD Max repair costs
The Max sits in my higher pricing tier, with the Gold and Platinum+: a flat £39 all-in. That covers the part, labour, return postage and a full PAT safety test — no hidden charges. Every repair is backed by my no-fix-no-fee promise — if I can't fix it, you don't pay for the repair — and a 12-month warranty against the same fault returning.
How the repair works
Send your Max in and I'll diagnose the actual fault properly — testing the cable, fuse, elements, sensor and board as needed — and fit the correct wide-plate, Max-specific parts rather than generic substitutes. The straighteners are then heat-tested to confirm both wide plates heat evenly and reach the right temperature, and PAT safety-tested before they come back. I do the work myself, in-house, start to finish.
Is it worth repairing a GHD Max?
Yes — and arguably more so than most, because the Max's wide plates make it genuinely hard to replace like-for-like. It's a premium straightener retailing well over £150, and the vast majority of faults are a single inexpensive component on an otherwise excellent pair. £39 to restore it — with no risk thanks to the no-fix-no-fee promise — is a clear win against buying new, and keeps a great tool in use.
If your GHD Max has stopped working, you can book a GHD Max repair for £39 all in — I'll send simple instructions for posting your straighteners in, confirm the exact fault when they arrive, and get them back to you working as they should.
The Repair Works is an independent UK repair service, run by me, Paul — 25 years of hands-on repair experience, working by post for customers across the whole country. Not affiliated with or endorsed by GHD.
