If your Commodore C64 displays a black screen or strange characters, the problem may be PLA U17 (MOS / CSG 906114-01) failure. Each PLA is always tested on my C64. IS IT WORK ON ALL C64??. ASSY Assy 326298, 250407, 250425, 250466, 251103 (SX64) and C64 Reloaded MK1 have been tested.
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