https://jestineyong.com Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Sat, 28 Feb 2026 00:44:56 +0000 en-US hourly 1 https://wordpress.org/?v=5.4.19 https://jestineyong.com/rebuilding-battery-pack-of-schiller-ventilator-model-graphnet-ts/ https://jestineyong.com/rebuilding-battery-pack-of-schiller-ventilator-model-graphnet-ts/#comments Sat, 28 Feb 2026 00:44:52 +0000 https://jestineyong.com/?p=36953         This was brought to me with the complaint that the battery backup was not working in the ventilator and this pack was not taking the charge. As the pack was already opened and checked by the biomedical technician, I checked and confirmed that the batteries were indeed weak. In fact, I […]

The post Rebuilding Battery Pack Of Schiller Ventilator Model GRAPHNET TS first appeared on Electronics Repair And Technology News.]]> https://jestineyong.com/rebuilding-battery-pack-of-schiller-ventilator-model-graphnet-ts/feed/ 10 https://jestineyong.com/5-volt-chargeable-1-5v-li-ion-sorbo-batteries-repair/ https://jestineyong.com/5-volt-chargeable-1-5v-li-ion-sorbo-batteries-repair/#comments Sat, 08 Mar 2025 06:52:01 +0000 https://jestineyong.com/?p=34766           This repair is about replacing often badly soldered or defect special smd charger controller chips in 5V chargeable 1.5V li-ion AA batteries. In the past I bought several of these Sorbo batteries of which a few of them kept suddenly dropping out in my photocamera while the other batteries kept […]

The post 5 Volt Chargeable 1.5v Li-Ion Sorbo Batteries  Repair first appeared on Electronics Repair And Technology News.]]> https://jestineyong.com/5-volt-chargeable-1-5v-li-ion-sorbo-batteries-repair/feed/ 8 https://jestineyong.com/how-to-revive-any-dead-phone-battery/ https://jestineyong.com/how-to-revive-any-dead-phone-battery/#comments Tue, 25 Aug 2020 02:49:13 +0000 https://jestineyong.com/?p=22733                 I am having old Samsung Mobile phone which is not in use since long time. I am not using it frequently because of its Memory Limitation having only 768 MB usable and it can’t hold much App. Load also.  One day while organizing my tool drawer I […]

The post How To Revive Any Dead Phone Battery first appeared on Electronics Repair And Technology News.]]> https://jestineyong.com/how-to-revive-any-dead-phone-battery/feed/ 11 https://jestineyong.com/new-battery-after-2-cycles-already-defect/ https://jestineyong.com/new-battery-after-2-cycles-already-defect/#comments Sat, 05 Jan 2019 05:21:39 +0000 https://jestineyong.com/?p=18607                     In previous repairs I wrote about successful fixing old laptop battery packs. In this article I write about a new sort of battery pack that turns into useless brand new battery packs even after having been used for only 2 charge cycles. Which happens when […]

The post New Battery After 2 Cycles Already Defect! first appeared on Electronics Repair And Technology News.]]> https://jestineyong.com/new-battery-after-2-cycles-already-defect/feed/ 44 https://jestineyong.com/2000mah-lithium-ion-faulty-in-battery-pack/ https://jestineyong.com/2000mah-lithium-ion-faulty-in-battery-pack/#comments Fri, 21 Sep 2018 22:57:43 +0000 https://jestineyong.com/?p=17745                       A customer, a good friend of mine came to the shop and was carrying a Makita drill set. As he explained the problem; one of the battery packs was completely dead. When pushing the test button on the battery, it does not show any […]

The post 2000mAH Lithium Ion Faulty In Battery Pack first appeared on Electronics Repair And Technology News.]]> https://jestineyong.com/2000mah-lithium-ion-faulty-in-battery-pack/feed/ 15