You should insulate the 3.3V regulator¡¯s tab from the heat sink including the screw.?
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On Mar 3, 2019, at 6:49 PM, John Sutter <
jds@...> wrote:
Sorry if you've already answered this.
It looks your 3.3V and 5V regulator heat sinks are shorting.
Did you use an insulator on the 3.3V regulator?
John
W1JDS
On 3/3/2019 5:44 PM, James Zdunic wrote:
What I can tell you is the 3.3v reg gets quite hot with the 7¡±
display. ?The heat sink shown in the photo below gets so hot you
can¡¯t touch it for more than a second or two before the hot stove
sensation sets in.<FF7C50BA_6666_431C_9EF8_A01940D2F7D6.jpeg>
The 5v reg hardly warms up the heat sink.
Jim ?KM4TXR
