GQ Electronics Technical Support Forum Active Users: / Visits Today:
Highest Active Users:
GQ Electronics Technical Support Forum
Home | Profile | Register | Active Topics | Members | Search | FAQ
Username:
Password:
Save Password
Forgot your Password?

 All Forums
 GQ Electronics Forums
 2.GQ Geiger Muller Counter
 gmc-320 Plus V.4
 New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

HenryJP

Canada
2 Posts

Posted - 04/10/2022 :  12:41:19  Show Profile  Reply with Quote
I accidently installed a fully charged battery in reverse. There was a smoke cloud in about 1 second. I disconnected the battery immediately, but the damage was done. It now doesn't see the battery, but works fine with the usb connector only. After a quick inspection ,I saw that a component on the board is fried. Its called "U7". A 5 PIn chip. I suspect its a chip regulator. Does anyone know what its value is, or if possible a work around, or know where I can get a schematic. (with values)
regards,
HenryJP
Reply #1

Damien68

France
703 Posts

Posted - 04/11/2022 :  06:08:43  Show Profile  Reply with Quote
you can read the marking on the chip and googling it
it look like LTC4054ES5-4.2

Mastery is acquired by studying, with it everything becomes simple

Edited by - Damien68 on 04/11/2022 22:06:37
Go to Top of Page
Reply #2

EmfDev

1734 Posts

Posted - 04/11/2022 :  10:06:15  Show Profile  Reply with Quote
Hi HenryJP, when did you buy this one and do you have an order number? Please send your order number and address to mark@gqelectronicsllc.com. We can send you one.
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
GQ Electronics Technical Support Forum © Copyright since 2011 Go To Top Of Page
Generated in 0.16 sec. Snitz's Forums 2000