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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Looking for IC901 (CXD9528S) micro or scrapped chassis for Sony/Dell 17" flat CRT
Looking for a micro IC901 (CXD9528S) from scraps.
Happen to have Dell/Sony P780 (flat crt 17") or other two kinds whole chassis or in parts? The IC901 micro on mine isn't pulling the power controls high (pin 6 and 24). The micro's xtal is oscillating at 24MHz. IC marking: CXD9528S for example and I2C bus activity is repeating. Goes by SCC-L29C-A (CPD-G200), SCC-L29S-A (CPD-G200P) or SCC-L29B-A (P780). All are based on D99 chassis. Different programmings in micro from different models on D99 is fine. Power flow way it is designed, micro controls the SMPS mode both indirectly and directly via a small power trysistor effectively shorting 180V and 13V lines together for low power mode. This also shuts off 12V & 5V feeds for the other two ICs (deflection ICs). Pulling these power control lines high will cause SMPS & turn on 12V regulator to run at full, powers rest of monitor. Cheers, Wizard |
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