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Leaking capacitors

Electrolyte visible on the PCB; corrosion or fishy smell present.

13 repair logs

PC Engine LT board (component side) on a paper towel with the Ext Bus connector desoldered and resting above it, exposing the electrolyte and grime caked on the board where the connector had sat.
+34 photos✓Successful repair

NEC — PC Engine LT

NEC PC Engine LT Recap + LCD Bias Fix (Necromancy)

An epic of strife, perseverance and adaptation. The NEC PC Engine LT is the 1991 laptop-format PC Engine with a built-in colour LCD. Almost always dead from cap leakage. This one needed a full recap, a new voltage regulator, and an off-the-shelf voltage inverter module to replace the T500 LCD bias transformer, killed by the electrolyte. Without that, the screen stays dark.

No powerNo video outputLeaking capacitors+2
Jan 26, 20261 thread
LG C1 OLED TV displaying Contra Hard Corps (Mega Drive), tested on the restored Sega Wondermega HWM-5010, on a media unit with other consoles and AV cabling below.
+15 photos

Sega — Wondermega

Sega Wondermega HWM-5010 Full Restoration (2nd Unit)

A pig to take apart and put back together, but the end result speaks for itself. Both the Mega Drive and Mega-CD sides of this Sega Wondermega HWM-5010 are fully operational.

Disc tray won't openLeaking capacitors
Nov 25, 20251 thread
Game Gear mainboard with ceramic capacitors replaced by electrolytic capacitors during recap repair, showing exposed PCB and component areas.
+4 photos

Sega — Game Gear

Sega Game Gear Recap Redo: Ceramics to Electrolytics

Cautionary tale and full recap redo on a Sega Game Gear: do not recap Game Gears with ceramic capacitors. Replaced ceramics with proper electrolytics throughout.

Leaking capacitors
Oct 28, 20252 threads
Two Nintendo Game Boy Player (DOL-017) units seen from their top side (the side that docks to the GameCube) on paper towel, a silver one and an indigo one, each with a sealed Console5 GameCube GB Player cap kit bag (NIN-GC-GBPLAYER-SMD-CK) resting on it, and an FNIRSI soldering iron in its case to the right.
+4 photos

Nintendo — Game Boy Player

Nintendo Game Boy Player (DOL-017) Recap: Leaking Caps

The first time I've actually encountered genuinely leaking capacitors in Nintendo Game Boy Player (DOL-017) units. These were memorable for that alone.

Corrupted graphicsCartridge slot oxidationLeaking capacitors
Sep 5, 20251 thread
Another angle of the same battery-leakage corrosion on the Sharp X68000 main board before cleaning, some components clearly covered in green corrosion.
+55 photos✗Could not fix

Sharp — X68000

Sharp X68000: Recap, FDD & Oscillator (No Picture Yet)

A proper exercise in stubbornness on this Sharp X68000. Two rounds of repair, a full recap, FDD surgery (one of the floppy drives had clear signs of a blown capacitor with charring on the PCB), a new oscillator, and still no picture. The X68000 remains on the 'future date' pile.

No powerNo video outputLeaking capacitors+2
Nov 5, 20243 threads
Corroded Wondermega mainboard showing oxidation on capacitors, damaged traces, and component deterioration requiring restoration work.
+135 photos◐Partial fix

Sega — Wondermega

Sega Wondermega HWM-5010 Restoration (1st Unit)

Absolute labour of love on this Sega Wondermega HWM-5010 from Japan: corrosion, missing components, broken traces and a RAM package with broken legs. The Mega Drive side eventually came back to life; the Mega-CD side continues to freeze on the BIOS animation, defying everything thrown at it.

No powerNo audioLeaking capacitors+3
Aug 29, 202416 threads
The underside of the Sharp X68000 Pro II power supply PCB, rested on top of the PSU's metal housing on the floor and being cleaned with a brush and a CompuCleaner air blower; massive electrolyte contamination covers the board, with darkened regions of the PCB and darkened solder joints, grime pooled where the electrolyte ran, and one edge of the board very dark from the contamination.
+40 photos◐Partial fix

Sharp — X68000 Pro II

Sharp X68000 Pro II: Magic Smoke, Transistor & R-Type

Proper saga on this Sharp X68000 Pro II. Magic smoke from a reversed capacitor, an accidental probe short, and enough replaced components to fill a parts drawer before a single faulty transistor finally gave the game away. Got it booting and running R-Type, which was a hard-earned win. Video output later stopped working, so the story isn't entirely over.

No powerPSU failureMagic smoke+2
Feb 12, 20248 threads
Macro of the Panasonic FZ-1 mainboard's power-supply section, the area worst hit by capacitor leakage: an L4960 regulator, the silver inductor L31 (marked 101), surrounding SMD diodes and resistors, a red status LED and the Panasonic "MDFUP064" silkscreen, with the through-holes darkened and corroded from electrolyte damage.
+21 photos✓Successful repair

3DO Company — Panasonic FZ-1

Panasonic FZ-1 3DO: Recap & ODE (2nd, Laser Donor)

This is the Panasonic FZ-1 3DO whose laser went to save its sibling. With the drive dead anyway, a full recap and an ODE installation was the logical conclusion.

Dead laserLeaking capacitors
Dec 4, 20234 threads
Close-up of Sega Nomad PCB showing removed capacitor and damaged solder joints from poor aftermarket screen installation work.
+32 photos✓Successful repair

Sega — Nomad

Sega Nomad: Screen Fix + CD Audio & Master System Mods

Sega Nomad with a broken aftermarket screen, brought back to life. Plus physical mods to restore CD audio mixing and add Master System game compatibility, both omitted from the original Nomad's design.

Leaking capacitors
Dec 7, 20226 threads
One of the two Sega Game Gears powered on after the work, its screen showing Columns broken up by defective horizontal lines, the partial-success unit.
+15 photos◐Partial fix

Sega — Game Gear

Sega Game Gear Heavy Electrolyte Recovery (2 Units)

Two heavily contaminated Sega Game Gears, so badly that components were falling off the boards from the electrolyte. Many hours in, one has a partially defective screen and the other boots and plays audio with no picture. A partial result after a massive effort.

No video outputCorrupted graphicsNo audio+3
Dec 7, 20222 threads
Disassembled Sega Game Gear motherboard showing reflowed solder joints and replaced capacitors during restoration work.
+4 photos✓Successful repair

Sega — Game Gear

Sega Game Gear Full Recap & Reflow Salvage Build

Should have been binned, but wasn't. This Sega Game Gear required replacing every capacitor and reflowing every solder joint before it became reliable, but it got there. Gift for a friend.

Leaking capacitors
Nov 13, 20221 thread
A tighter shot of the same PC Engine GT mainboard area around Q500, the heavy brownish electrolyte residue from the leaked capacitors clearly visible.
+6 photos✓Successful repair

NEC — PC Engine GT

NEC PC Engine GT Recap: All Caps Leaked, All Pads Saved

Every single capacitor on this NEC PC Engine GT handheld had leaked. A careful removal technique preserved all the pads and it came out the other end clean and happy.

Leaking capacitorsCapacitor leakage damage
Nov 4, 20222 threads
Hand holding a new replacement gear (all teeth intact) for the NEC PC Engine Super CD-ROM2 beside the old yellowed gear, which is missing several teeth, during the refurbishment.
+11 photos✓Successful repair

NEC — PC Engine Super CD-ROM2

NEC PC Engine Super CD-ROM² Recap, Broken Gear & RGB Amp

This NEC PC Engine Super CD-ROM² gave me a scare mid-recap when it lost the picture entirely. Turned out to be a resistor knocked off during SMD cap removal; found it on the paper towel and put it back. Also gained a new transport gear and an RGB amp.

Disc read errorBroken drive rail/gearDistorted audio+1
Jul 21, 20222 threads