No Power In Calculator Repaired

 

 

 

 

 

 

Friend of mine in our housing society gave me this calculator to fix.
I checked by pressing ON/AC Button but no digits visible on the screen.
Hence I opened the calculator by removing two screws from the back side for visual inspection. I found here…..metal battery holder cover is hanging on the PCB.

So I took it on my workbench for repair……..

So first of all I have to make patch on this damaged trace so that it can hold the metal cover with pressure while battery is inserted.

Arranged one BMS circuit of laptop’s damaged battery from my junk box which have wide copper strip soldered on battery cell.

I cut this copper end and patched on damaged trace on the PCB.

Soldered copper strip patch over the damaged area and soldered battery holder metal cap on it.

Inserted the Battery under the cap……. & checked calculator is back to the life.

This article was prepared for you by Yogesh Panchal who works as a Computer Hardware Engineer in Mumbai India. 

P.S- Do you know of any your friends who would benefit from this content that you are reading now? If so, forward this website to your friends or you can invite your friends to subscribe to my newsletter for free in this Link.

Note: You can check his previous repair articles on Canon LBP 2900 Printer Repaired

 

9 Comments

1. 

   Parasuraman S

   May 28, 2022 at 11:12 pm

   A very calculated patch work on a calculator! Well done! It is not what we repair that matters, the thrill we get when we accomplish!

   Likes(2)Dislikes(0)

   Reply
   • 

     Yogesh Panchal

     May 30, 2022 at 3:24 pm

     Absolutely right Sir.

     Likes(1)Dislikes(0)

     Reply
2. 

   Imoudu.O

   May 28, 2022 at 11:16 pm

   Good good good!!!.Most people would have thrown such devise away,but you resuscitate it and save our oceans from e-waste.Thanks for sharing.

   Likes(2)Dislikes(0)

   Reply
   • 

     Yogesh Panchal

     May 30, 2022 at 3:44 pm

     Imoudu.O
     Thanks! If we have skill to revive the equipment just repair it rather throw it away & give it to some body who need it.

     Likes(0)Dislikes(0)

     Reply
3. 

   Albert van Bemmelen

   May 29, 2022 at 1:33 am

   Nicely patched up fix! Pro job!

   Likes(3)Dislikes(0)

   Reply
   • 

     Yogesh Panchal

     May 30, 2022 at 3:47 pm

     Thanks! Albert

     Practice always improve the skill & our mind is also prepared ready for any challenge.

     Likes(1)Dislikes(0)

     Reply
4. 

   Lynn Blakely

   May 30, 2022 at 6:40 am

   Dear Yogesh: Well done Thanks for the detailed pictures and dialogue.

   Likes(0)Dislikes(0)

   Reply
5. 

   Waleed Rishmawi

   May 30, 2022 at 7:34 pm

   I like the soldering joint you made, it looks very solid and a job well done.

   Likes(0)Dislikes(0)

   Reply
6. 

   Humberto

   July 1, 2022 at 10:50 pm

   Thanks for sharing this article.

   Likes(0)Dislikes(0)

   Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.