Overload protection

Here you can ask technical questions about REVELPROG-IS and device/memory programming.
verkkotalo
Posts: 9
Joined: Mon Sep 13, 2021 1:37 pm

Overload protection

Postby verkkotalo » Wed Oct 05, 2022 1:56 pm

What happened to the device? Is this a warranty case? Yesterday the same chip read normally, but today these problems. I use a clips.
Test done without a chip
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verkkotalo
Posts: 9
Joined: Mon Sep 13, 2021 1:37 pm

Re: Overload protection

Postby verkkotalo » Wed Oct 05, 2022 2:21 pm

Doesn't read and write correctly
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ArT
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Re: Overload protection

Postby ArT » Thu Oct 06, 2022 11:06 am

Protection buffers are damaged. This type of damage is not a warranty case, because buffers protects from wrong connection and short circuit. When you program in external circuit with clip, programmer can not limit external current and in case of wrong connection all high current is going through buffers and they can be damaged and need replacement. Pleace check similar case here:
viewtopic.php?f=22&t=401&p=2002&hilit=%2Acb3q%2A#p2002
You can replace it for your own (details in above topic) or you can send programmer to our service - in such case please contact with me via PM for details.

verkkotalo
Posts: 9
Joined: Mon Sep 13, 2021 1:37 pm

Re: Overload protection

Postby verkkotalo » Thu Oct 06, 2022 11:58 am

Do I need to change all SN74CB3Q3245PWR or is it enough to change only one?

ArT
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Re: Overload protection

Postby ArT » Thu Oct 06, 2022 5:44 pm

You should replace all 4 at once because it may not work properly if you replace only one (even if hardware test pass after repair). Buffer for 25xx devices is second (2 from 4) counting from processor side, if you are programming only 25xx devices you do not have to solder 1st, 3rd and 4th but old buffers should be removed.


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