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不久,修过数台星球牌XQ708型双卡收录机,出现双声道收放音均无声故障,经检查多系该机的功放集成块TA7232P损坏。但因手头无此集成块,通过分析电路发现,该集成块与TA7240AP的内部结构和引脚功能基本相同,经试机,用TA7240AP代换TA7232P获得成功。也不需更换任何元件,只要按表1对应脚号用导线连接即可。(经用户使用数月均未出现
Soon, repair a few stars card XQ708 dual-card recorders, there are two-channel playback sound are silent, the system after checking the power amplifier manifold TA7232P damage. However, due to the absence of this integrated block on hand, through the analysis of the circuit found that the integrated block and TA7240AP internal structure and pin functions are basically the same, the test machine, TA7240AP substitution TA7232P success. Also do not need to replace any components, as long as the table corresponding to the foot number with the wire connection can be. (After several months users did not appear