Smart Glass Repair
Stuck on frosted? Flickering? Won't switch at all? Nine times out of ten it's the transformer — not your film or your glass. We ship a compatible replacement anywhere in the US, for virtually any PDLC smart glass or smart film system.
Smart glass repair almost always comes down to one part. Here's how to tell what's wrong, what you can check yourself, and how to get the right replacement — fast.
It’s almost always the transformer
PDLC switchable glass and film need a low-voltage AC supply to change states. The film and wiring almost never fail — but the transformer, the small power-supply box behind your wall switch, fails routinely.
When it goes, the glass gets stuck on one state — usually frosted, its unpowered default — or starts flickering. Swap the transformer and the whole system comes back to life. No new glass, no re-installation.
Common smart glass problems — and what they mean
Most point straight back to the power supply. Here’s how to read the signs:
Stuck on frosted
The most common fault. The glass won’t switch to clear — almost always a dead transformer.
Stuck on clear
Less common. The film won’t frost — usually a wiring short or a transformer fault.
Flickering
The glass flickers between states — voltage dropout, the sign of a transformer starting to fail.
Partial frosting
Only part of the panel switches — film delamination or a local wiring break.
Slow switching
It changes, but sluggishly — the transformer is underpowered for the panel, or aging.
Dead — no response
Nothing happens at all — a failed transformer or a broken wire to the panel.
Hearing a buzz from the unit? That’s a transformer on its way out — replace it before it quits completely.
Diagnose it at home in four checks
- Wall switch — is power actually reaching the transformer?
- Transformer LED — most units have a power light. Lit means power is getting there.
- Output voltage — with a multimeter, the AC output at the film terminals should match the figure stamped on the unit (typically around 60V AC).
- Cable continuity — a broken wire to the panel reads just like a dead transformer when the transformer is actually fine.
If the checks point to the transformer, you need a replacement — that’s where we come in.
We ship a compatible replacement — for any brand
We stock low-voltage PDLC transformers for every panel size, and they’re compatible with virtually any switchable smart glass or smart film system — whatever brand you have. Ships anywhere in the US, typically in 5–7 business days.
Small
Single panels — under ~50 sq ft. A shower door, a single window.
Medium
Rooms — ~50–150 sq ft. A partition wall or a run of windows.
Large
Commercial — 150+ sq ft, often several units wired together for big partitions.
Not sure which you need? Send a photo of your existing transformer’s spec label and we’ll confirm the exact replacement before you order — or browse the full transformer lineup.
When it’s replacement, not repair
A repair gets a previously-installed system working again without replacing the glass — usually a new transformer, sometimes rewiring or re-bonding lifted film. PDLC is mechanically simple, so the failure is almost always electrical, not optical.
But if the glass itself has failed — delamination, a failed sealed unit, or a crack — the fix shifts from repair to replacement. We can do either, and we’ll tell you straight which one you actually need.