This repair was commissioned by a long-time contact of mine; it involves the now rare M82 Kiosk System PAL version from Nintendo.

The Nintendo Entertainment System model no. M82 (NES M82), also known as simply the M82 was an in-store demo unit of the Nintendo Entertainment System capable of holding 12 cartridges at once.

The unit allowed players to test new NES games, with a limit on gameplay time, before making a purchase. The unit came with a theme song by Hirokazu Tanaka, known as the “Glorious March” theme in the Lost Tapes album. 

The unit contained up to 12 pre-selected cartridges and allowed players to select between them using the red button on the front centre. A play time limit of 30 seconds, 3, 6 or 128 minutes would be set by a selector on the rear of the unit, after which the system would reset.

Defect:

• Exploded RIFA filter capacitors.
• No audio.
• Crackling audio.
• Dirty.

Component Replacement:

• 2 x RIFA filter capacitors.
• 3 x Electrolytic capacitors (Audio Section – Video Modulator).
• 3 x Ceramic capacitors (Audio Section – M82 Motherboard).
• 1 x Electrolytic capacitor (Audio Section – M82 Motherboard).
• 1 x Texas Instruments SN74HCU04N IC (Audio Section – M82 Motherboard).

General cleaning:

• Internal and external case.
• Pad.
• Front plexiglass.
• Wiring.
• Motherboard.
• Front panel.

The original power supply SPL50-3200 of Power-One Inc does not suffer of leaky or damaged capacitors; the output voltage is stable and free of significant ripple.

My advice, rather than replacing all the capacitors is to replace the original power supply with a more modern one that supplies the only voltage used by the M82, 5V with the appropriate amperage.

Below the gallery you will find dumps of the two EPROMs of the Nintendo M82 Kiosk System in the PAL version.

Gallery:

12►

Video: https://www.youtube.com/shorts/ChXUud06rCs

Download:

• Nintendo ROM M82 V1.0 (PAL) PRG - CHR (77)
• Nintendo NES Schematics & SPL50-3200 PSU INFO Pinout (76)