Tag: video repair

3 matching upgrades

Showing 3 products.

Status Product What it does Compatibility Links

Status	Product	What it does	Compatibility	Links
Build itChecked Jul 30, 2026	C64 Composite/S-Video RF Modulator Replacementby Matthew Barszcz (mbarszcz-pcb) rf modulator rf delete composite video s video video repair internal mod open hardware through hole soldering replacement	Open, through-hole RF-modulator replacement with adjustable C64 luma and chroma output levels. The repository supplies KiCad sources, Gerbers, a schematic, a BOM, and assembly and adjustment instructions. Components were estimated at about $12 when documented, excluding PCBs and shipping. Building the board requires through-hole assembly; installing it requires safely desoldering the original RF can and selecting the correct jumper configuration. Using the shortboard setting on a longboard can feed the wrong voltage and damage the VIC-II. Sources mbarszcz-pcb C64 RF modulator replacement Breadbox64 RF Modulator Battle	Commodore 64 Exact model	C64 RF modulator replacement project Independent RF replacement comparison
AvailableChecked Jul 24, 2026	Phase 3by Joe's Computer Museum composite video ntsc color video repair internal upgrade	Corrects the color-phase error in the Apple III family's NTSC composite-video signal. JCM showed 75 units in stock on 2026-07-24. Phase 3 affects only the NTSC-compatible color-composite signal on the 15-pin video connector. It does not add color to the rear black-and-white jack, alter RGB output, or work on PAL-coded systems. Sources JCM Phase 3 page	Apple III Exact model Apple III Plus Exact model	Phase 3 product page
Check statusChecked Jul 30, 2026	Shuriken RF Modulator Replacementby Commodore4ever rf modulator rf delete composite video s video video repair internal mod soldering replacement	Replaces the C64 RF-modulator circuitry while retaining composite and S-Video through the computer's A/V port. The current maker page remains online but exposes no price, stock state, or order control. Human inspection recovered a maker compatibility list naming PAL and NTSC Assy 250407 C64 boards and all C128 board revisions; Tavily did not render those list values. A 2020 independent review also tested a SixtyClone Assy 250466, where both composite and S-Video worked. Removing the original modulator and installing Shuriken requires desoldering and soldering. RF output is removed. Sources Commodore4ever Shuriken page Breadbox64 RF Modulator Battle	Commodore 64 Exact model Commodore 128 Exact model	Shuriken RF Modulator Replacement Shuriken comparison review

Build itChecked Jul 30, 2026

C64 Composite/S-Video RF Modulator Replacementby Matthew Barszcz (mbarszcz-pcb)

Open, through-hole RF-modulator replacement with adjustable C64 luma and chroma output levels.

The repository supplies KiCad sources, Gerbers, a schematic, a BOM, and assembly and adjustment instructions. Components were estimated at about $12 when documented, excluding PCBs and shipping. Building the board requires through-hole assembly; installing it requires safely desoldering the original RF can and selecting the correct jumper configuration. Using the shortboard setting on a longboard can feed the wrong voltage and damage the VIC-II.

Sources

Commodore 64 Exact model

C64 RF modulator replacement project Independent RF replacement comparison

AvailableChecked Jul 24, 2026

Phase 3by Joe's Computer Museum

Corrects the color-phase error in the Apple III family's NTSC composite-video signal.

JCM showed 75 units in stock on 2026-07-24. Phase 3 affects only the NTSC-compatible color-composite signal on the 15-pin video connector. It does not add color to the rear black-and-white jack, alter RGB output, or work on PAL-coded systems.

Sources

JCM Phase 3 page

Apple III Exact model
Apple III Plus Exact model

Phase 3 product page

Check statusChecked Jul 30, 2026

Shuriken RF Modulator Replacementby Commodore4ever

Replaces the C64 RF-modulator circuitry while retaining composite and S-Video through the computer's A/V port.

The current maker page remains online but exposes no price, stock state, or order control. Human inspection recovered a maker compatibility list naming PAL and NTSC Assy 250407 C64 boards and all C128 board revisions; Tavily did not render those list values. A 2020 independent review also tested a SixtyClone Assy 250466, where both composite and S-Video worked. Removing the original modulator and installing Shuriken requires desoldering and soldering. RF output is removed.

Sources

Commodore 64 Exact model
Commodore 128 Exact model

Shuriken RF Modulator Replacement Shuriken comparison review