https://jestineyong.com Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Fri, 04 Dec 2020 10:03:23 +0000 en-US hourly 1 https://wordpress.org/?v=5.4.19 https://jestineyong.com/lenovo-laptop-adapter-repaired-for-not-charging-problem/ https://jestineyong.com/lenovo-laptop-adapter-repaired-for-not-charging-problem/#comments Fri, 04 Dec 2020 10:03:22 +0000 https://jestineyong.com/?p=23739                   Customer has delivered this laptop charger for repair. Stating problem as above. On arrival I did voltage testing on Dc output Pin it shows 2.3V DC instead of 19V DC. This is not normal reading so I opened the adapter. I am not sharing the opening […]

The post Lenovo Laptop Adapter Repaired For Not Charging Problem first appeared on Electronics Repair And Technology News.]]> https://jestineyong.com/lenovo-laptop-adapter-repaired-for-not-charging-problem/feed/ 13 https://jestineyong.com/sony-laptop-charger-repair/ https://jestineyong.com/sony-laptop-charger-repair/#comments Sat, 03 Sep 2016 08:00:40 +0000 https://jestineyong.com/?p=13128                 Customer walked in to my workshop wanted me to repair his Sony Laptop. The complaint was the charger because sometimes it can charge the battery and sometimes not charging. What I did was to connect the power adapter to the Laptop and powered it ON. I found […]

The post Sony Laptop Charger Repair- Intermittent Problem first appeared on Electronics Repair And Technology News.]]> https://jestineyong.com/sony-laptop-charger-repair/feed/ 25 https://jestineyong.com/laptop-adapter-repair-2/ https://jestineyong.com/laptop-adapter-repair-2/#respond Mon, 16 Jun 2014 13:34:25 +0000 https://www.jestineyong.com/?p=10429               A customer came to me with his MSI wind u100 Laptops power adapter with the complaint of can’t charge the battery of laptop. When the output was checked there was no output voltage at all. Since the power cable was checked to be good this means the circuit […]

The post Laptop Adapter Repaired first appeared on Electronics Repair And Technology News.]]> https://jestineyong.com/laptop-adapter-repair-2/feed/ 0 https://jestineyong.com/laptop-power-adapter-repair/ https://jestineyong.com/laptop-power-adapter-repair/#comments Fri, 25 Apr 2014 02:29:53 +0000 https://www.jestineyong.com/?p=10263             My sister in law brought me this laptop power adapter and explained to me that it does not charge at all. When I powered up the charger, I could hear some ticking coming from inside. Usually when I hear ticking I think of loose connection or bad capacitors. At least […]

The post Laptop power adapter brought back to life. Model: Dell LA90PS0-00 first appeared on Electronics Repair And Technology News.]]> https://jestineyong.com/laptop-power-adapter-repair/feed/ 1 https://jestineyong.com/a-dead-dell-laptop-charger-repaired-model-da90ps2-00/ https://jestineyong.com/a-dead-dell-laptop-charger-repaired-model-da90ps2-00/#comments Sat, 28 Sep 2013 14:59:11 +0000 https://www.jestineyong.com/?p=5534 A computer technician brought this dell laptop charger to my shop and told me that the cable needed to be changed. Once I opened it and replaced the cable with a brand new one, it did not bring the laptop charger back to life.   The way to open such a charger is to use […]

The post A dead Dell laptop charger repaired. Model: DA90PS2-00 first appeared on Electronics Repair And Technology News.]]> https://jestineyong.com/a-dead-dell-laptop-charger-repaired-model-da90ps2-00/feed/ 66