Recap decisions
Is a recap worth it?
Recapping is the most oversold repair in electronics, and sometimes the most necessary one. Both things are true, and this page separates them: when the capacitors are the fault, when they are not, and how to do the math before you spend anything.
What a recap actually fixes
An electrolytic capacitor is a small can of foil and wet electrolyte, and it is the part on almost every board that ages out first. Heat dries the electrolyte. A dried-out cap stops smoothing its power rail, and the rail sags and goes noisy. The board downstream does strange things: it hums, browns out on power-up, resets at random, loses a channel when it warms up, or will not power at all. On the leaky-cap console generations it physically leaks onto the board and eats what it touches.
A recap replaces every electrolytic on the board with fresh quality parts, 105°C rated and low-ESR where the board calls for it. When capacitors are the fault, that is the fix, and the board comes back stable for years.
The honest answer is sometimes no
Here is the part most recap marketing leaves out: a unit that works, shows no symptoms, and passes a diagnosis does not need a recap today. Replacing healthy capacitors is spending money on a board that is fine. We will not quote a recap onto a board that does not need one, and any shop that leads with "everything old needs a recap" is selling the easy answer.
- A legitimate "don't recap it yet": the unit works, the caps show no bulges or stains, and the diagnosis finds the electrolytics healthy. Revisit if symptoms appear; until then, spend nothing.
- A recap yes, and soon: bulged or leaky capacitors, the classic warm-up faults, the leaky-cap console generations (Dreamcast, GameCube, original Xbox, PS2, and the Sega boards), and any unit 30 or more years old still carrying its original electrolytics. At that age the caps are living on borrowed time, and waiting is how a leak takes the whole board with it.
The $49 diagnosis, free when you approve the repair, is what tells you which list you are on. It runs the unit warm, because a cap that reads fine cold can fail the moment the board heats up.
The math: recap vs replace
The bench's standing rule: if the repair costs less than about half of what a comparable replacement costs, fix it. Recaps usually clear that bar with room to spare, because the gear that needs them rarely has a cheap equivalent.
| Recap | Against the replacement | Verdict |
|---|---|---|
| Board-level, from $75 | A replacement board or console you usually cannot buy new | Fix: the board has no real substitute |
| Receiver or amp, $200–$500 typical | A new receiver built to a comparable standard costs well over $1,000; a budget box is not the same machine | Fix: a $300 recap against a new equivalent wins, and it buys the next 20 years of the one you own |
| Complex unit, quoted | Depends entirely on the unit | The $49 diagnosis answers it with both numbers before you commit |
Sentiment counts as math here. A grandfather's receiver is not replaceable at any price, and "I want to keep this one working" is a legitimate vote. The full decision framework lives in is your device worth fixing?, and the fix-or-replace calculator runs your actual numbers.
When to do it: preventive vs failure-driven
Both approaches are honest. They just answer different situations.
- Failure-driven is what most people do: the unit misbehaves, the diagnosis confirms the caps, the recap fixes it. Cheapest path to a working unit once symptoms exist. The one risk: if a cap was leaking, whatever the electrolyte already cost you is already gone, and the quote will say so before you commit.
- Preventive is done before symptoms, on gear that ages out on a known schedule. On the leaky-cap console generations it is the right default: a recap now costs less than the board it prevents losing. The trade-off is honest too: you are replacing some capacitors that might have lived a while longer.
The tiebreak: leaky-cap generations get the preventive treatment by default. Everything else lets the diagnosis decide, because a healthy board deserves to be told it is healthy.
What a recap does not fix
A recap is not a magic wand for every dead board, and pretending otherwise is how shops sell repairs that do not work.
- Not a cracked board, a dead processor, or a blown trace. Different jobs, their own honest verdicts.
- Not a broken connector. A corroded connector is a different repair, and on automotive boards it matters as much as the capacitors.
- Not an undo button for old leak damage. A cap that leaked for years can eat a trace or a pad. We tell you what the leak already cost before you commit, and sometimes the honest verdict is parts-only.
- Not a tune-up for a healthy board. If the caps test fine, the real fault gets chased instead.
Questions people ask before deciding
Can I just replace the bulged ones?
No, and the reason is physical, not upsell. A bulged capacitor is the one that failed first, not the only one that is failing: every other cap on that rail is the same age with the same hours on it. Replacing only the visible failures is how a board comes back to the bench a few months later, and it is not a recap. A full recap means every electrolytic on the board gets replaced.
How long does a recap take?
It depends on the cap count and the teardown. A small board is quick; a receiver carrying a hundred or more capacitors takes longer. The quote states the turnaround before you approve anything, and mail-in jobs get the same answer in writing.
Do you recap just the power supply?
Sometimes that is the honest right answer, and we say so when it is. A supply-only job is a partial recap: the caps on the one board where the hottest, most failure-prone capacitors live. It costs less than a full recap and it fixes power-rail symptoms, but aging caps elsewhere on the unit keep aging. If the diagnosis says the rest of the unit is healthy, a supply-only recap is a reasonable stop; if the whole unit is at recap age, the full job is the better spend.
Is my unit worth recapping?
Run the simple math: the recap quote against what a comparable working replacement costs, plus what the unit is worth to you. A $300 recap on a solid vintage receiver beats hunting a new equivalent, because receivers built to that standard start several times higher. On a unit with no real replacement, your attachment decides, and that is a legitimate vote. The $49 diagnosis, free when you approve the repair, gives you both numbers before you commit.
What are the signs a unit needs a recap?
Hum, weak or thin output, random resets, a channel that drops out when it warms up, no power at all on the leaky-cap console generations, and capacitors that look bulged or stained on the board. Any of these deserves a diagnosis, because the same symptoms can also come from faults a recap will not fix.
Does a recap change how my gear sounds?
If tired capacitors were dragging the circuit down, yes: on audio the bench measures before and after, and the published full-recap range is $200 to $500. If the caps were still healthy, a recap should change nothing, which is exactly why we diagnose first instead of quoting recaps onto boards that do not need them.