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BG438546421 21/11/2020
The desoldering gun S-998 is not working, NOT as described. The tip heating system is insufficient, even with the maximum temperature the freshly sucked tin solidifies at the end of the tip tube and does not fall into the collection tube. More than once you have to take a real soldering iron, Weller, and heat the end of the tip’s tube from the inside (first removing the collection tube with the filter) to dissolve the accumulated tin that completely closes the tube itself. Or you have to unscrew and remove all the tip and heat the final part of the tip’s tube with a soldering iron to remove the solidified tin. Furthermore, even with the temperature at the maximum it takes 2 or 3 seconds to see the solder dissolved even on small components, such as a 1N4148 diode, on double-sided PCB I'm not the only one with this problem, skipping all 5 star reviews will find 2 with the same problem: at 2018-12-28 02:06:19 It will block very often if you do short sharp sucks. Be sure to suck the hole fully, for around 2 seconds, to ensure all the solder has gone all the way through the tip tube. If it gets badly blocked, you need to remove the tip and heat it to melt the solder inside. If it's only blocked at the opening inside the plastic tube, you can heat that with a regular soldering iron and push it down into the hot part of the tube. at 2017-04-11 04:34:18 Problems with the temperature. When I set the control to maximum, the temperature will only go to 360C. I have checked the temperature with two devices and received the same results. I have tried waiting five minutes with the same results. Having difficulty desoldering even small components. Unable to rate the device until problem resolved but delivery was very quick and the tool looks good quality, but unfortunately not working correctly on arrival. Only one of the 2 pumps has been tested, the other is closed and never used. I ask for a return and refund due to a serious malfunction.
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