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
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  


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)
Reply #1


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


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 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