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Re: #QMX Failed to turn on today after working perfectly before #qmx

 

The 5.6V Zener on the 5V SMPS board is now 5W (first PCB revision, it was 500mW. 5W is better).?

The 3.3V Zener on the 3.3V SMPS board is 500mW and MUST REMAIN 500mW, do NOT change it to a higher rated part, it won't work!

73 Hans G0UPL



On Thu, Sep 5, 2024 at 1:17?PM DH8WN via <DH8WN=[email protected]> wrote:
On Wed, Sep 4, 2024 at 11:57 PM, Ronan Cantwell wrote:
Would it make sense to order a slightly higher rated replacement part or would it be wiser to stick to the 500mW surface mount component?
Ronan, I remember a Post from Hans G0UPL a while ago. He told NOT to change the type. It was something about the voltage characteristic.
73 Ludwig
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