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银燕系列闪光灯主要由电子电路和闪光灯管两部分组成,以下就常见故障及检修处理作简单介绍,供参考。一、通电后电源指示灯不亮,也听不到“吱吱”声。分析该故障原因大多是灯内电池与电池架问开。路所致。此外操作不当也易引起故障。使用闪光灯后,未能及时将电池取出,长时间搁放,导致电池电解液泄漏,从而锈蚀电池架铜片。碰到这种情况,可将污点仔细刮尽,再用棉球沾无水酒精擦拭,即可排除故障。另一种情况是电子振荡电路部分有故障,应先检查振荡管是否完好,比如各电极间是否存在短路或者该管穿透电流是否过大,引起停振。同时也应用万用表检查振荡管外围元件是否损坏。如果振荡管损坏,且一时不能购到同型号管,可暂时用电视机中场输出管2SC1162直接代换。二、闪光灯充电过程中,能发出“吱吱”声,但灯管不能启动工作。应首先检查闪光灯管是否烧坏,或者灯座是否接触良好等。接着可拆下闪光灯外壳检查充电二极.管和电容是否损坏及漏电。如果上述元件均无故障,则很可能是升压变压器损坏。由于该变压器内部线圈线径很细,易发生霉断和局部短路。同时还’应测量变压器线圈与引脚的焊接是否良好,有无虚
Silver Yan series flash mainly by the electronic circuit and flash tube of two parts, the following common faults and overhauls for a brief introduction for reference. First, the power indicator light does not shine, can not hear “creak ” sound. Analysis of the causes of the malfunction are mostly light battery and battery rack asked to open. Road caused. In addition, improper operation is also easy to cause failure. After using the flash, failed to remove the battery in a timely manner, prolonged storage, resulting in leakage of battery electrolyte, thereby corrupting the battery rack copper. In this case, the stain can be carefully scraped, and then wipe the cotton ball stained with anhydrous alcohol, you can troubleshoot. Another case is the electronic oscillation circuit part of the fault, you should first check the oscillation tube is intact, such as the existence of short circuit between the electrodes or the tube penetration current is too large, causing vibration. Also use a multimeter to check whether the external components of the oscillation tube are damaged. If the oscillation tube is damaged, and can not be purchased for the same type of pipe, temporarily replace the TV mid field output tube 2SC1162. Second, the flash charging process, can issue “creak ” sound, but the lamp can not start working. Should first check the flash tube is burned out, or lamp holder is in good contact. Then remove the flash housing to check the charging diode, the tube and the capacitor for damage and leakage. If none of the above components are faulty, it is likely that the step-up transformer is damaged. As the transformer coil diameter inside the very small, prone to mildew and local short circuit. At the same time should also measure the transformer coil and pin welding is good, with or without