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Distorted audio

Sound present but degraded, crackling or otherwise distorted.

3 repair logs

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
Sony HB-F1XV MSX2+ mainboard with replaced HIC-1 MLCC capacitors, orange daughterboard, and various ICs on blue work mat during restoration.
+8 photos✓Successful repair

Sony — HB-F1XV (MSX2+)

Sony HB-F1XV MSX2+ Recap, Keyboard PCB & Carnivore 2

Sound issues on this Sony HB-F1XV MSX2+ traced to the HIC-1 board SMDs, replaced with MLCC caps. Also gained a Carnivore 2 flashcart and a new keyboard PCB.

Distorted audio
Jun 23, 20223 threads
NEC PC Engine Duo Full Recap, Supercap & RGB Mod (1st Unit)
+16 photos✓Successful repair

NEC — PC Engine Duo

NEC PC Engine Duo Full Recap, Supercap & RGB Mod (1st Unit)

Leakage everywhere and audio to match, recorded before and after. The board was fully depopulated, the pads treated and then recapped with a Console5 kit including a new supercapacitor. Later given an early RGB mod, done by cutting the DIN pin rather than a trace on the board.

JailbarsDistorted audioLeaking capacitors
Jan 29, 20211 thread