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问题的提出:孔雀KQ2188型(飞利蒲TDA机芯)彩电,用户讲述:该机都在开机时出现“吱”一声的故障。不到半年送修三次,更换过主电源开关控制管Q907(2SC2335)、行输出管Q402(2SD1555)。其中第二次还更换了被击坏的场输出集成电路IC401(TDA3653B)。经三次修复后彩电正常收看的时间越来越短,说明故障根源尚未排除。
Question raised: Peacock KQ2188 type (Philips TDA movement) color TV, the user tells: This machine is in boot “squeak” as soon as the fault. Less than six months for repair three times, replaced the main power switch control tube Q907 (2SC2335), line output tube Q402 (2SD1555). The second time also replaced the damaged field output IC IC140 (TDA3653B). After three times the normal TV TV repair time getting shorter and shorter, indicating the root cause of the malfunction has not been ruled out.