{ "item_title" : "Troubleshooting the Atari 8-bit", "item_author" : [" Piotr Grabarczyk "], "item_description" : "Your Atari won't start. The screen is black, or full of garbage, or the keyboard died halfway through a game. Somewhere on that forty-year-old board is one bad part - and the hard part isn't fixing it. It's finding it without destroying three good ones on the way. This manual walks you through that search in the order a working technician uses: power first, then contacts, then measurement, and chips only at the end. Most serious faults in these machines turn out to be a tired power supply or a dirty socket, and both are free to rule out. Written for both ends of the bench. If you have never used a multimeter, the book starts with which socket the probes go in and why the wrong one blows the fuse. If you have been repairing for years, you will find free-running bus tests, logic-state references for every chip, and the voltage-drop method for locating a short without unsoldering the board. Inside: Symptom-by-symptom diagnosis - black screen, garbage, no color, dead keyboard, dead joystick portPinouts for every chip: 6502C, ANTIC, GTIA, POKEY, PIA, FREDDIE and the memoryClock measurement points with both PAL and NTSC frequenciesBus continuity tables and logic-state referencesSoldering and capacitor replacement, with the full parts list for an XE boardOver-voltage protection that stops a failing supply from killing your machineA one-page bench card to print and pin above your desk Seventeen diagrams drawn specifically for this book. Every pin number verified against the factory schematic - and where sources disagree, the book says so instead of hiding it. Covers the Atari 800XL, 65XE, 130XE and 800XE in both PAL and NTSC versions. An independent publication, not authorized by or affiliated with any trademark holder.", "item_img_path" : "https://covers2.booksamillion.com/covers/bam/9/79/816/599/9798165990137_b.jpg", "price_data" : { "retail_price" : "20.00", "online_price" : "20.00", "our_price" : "20.00", "club_price" : "20.00", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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