Comments on: Dick Smith LOPT/FBT tester repair. https://jestineyong.com/dick-smith-loptfbt-tester-repair/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Fri, 07 Feb 2020 14:39:39 +0000 hourly 1 https://wordpress.org/?v=5.4.19 By: jai https://jestineyong.com/dick-smith-loptfbt-tester-repair/comment-page-1/#comment-365873 Fri, 07 Feb 2020 14:39:39 +0000 https://www.jestineyong.com/?p=5228#comment-365873 Good job Waleed.

Likes(0)Dislikes(0)
]]> By: teddux https://jestineyong.com/dick-smith-loptfbt-tester-repair/comment-page-1/#comment-324563 Mon, 30 Oct 2017 17:20:55 +0000 https://www.jestineyong.com/?p=5228#comment-324563 That LM393 is a common problem in these units.
I couldn't find a replacement; so, modded a LM339N in situ...

If each time you depress the ON switch and the LED's count-up, the second "Shift Register" I.C.2 is Okay. "Part A" of I.C. 1 is bad.

I just got through repairing mine that sat w/ batteries - leaked/ damaged for years.
Installed new brighter LED's, also.

Drilled hole in top of case for power supply when needed. No more internal batteries for mine!
Already made a new board but it will wait in the case for another time.

Likes(0)Dislikes(0)
]]> By: Waleed Rishmawi https://jestineyong.com/dick-smith-loptfbt-tester-repair/comment-page-1/#comment-194216 Sat, 27 Jul 2013 08:32:40 +0000 https://www.jestineyong.com/?p=5228#comment-194216 you are welcome Shihab. tools and knowledge gos hand in hand in the repair field.

Likes(0)Dislikes(0)
]]> By: shihab kably https://jestineyong.com/dick-smith-loptfbt-tester-repair/comment-page-1/#comment-194188 Fri, 26 Jul 2013 11:08:30 +0000 https://www.jestineyong.com/?p=5228#comment-194188 test devices are our weapons in this field and it is important to learn how to take care for them .thanks for sharing this experience

Likes(0)Dislikes(0)
]]>