PreenFM > preenfm2 and preenfm3

[SOLVED]Bad power supply with high voltage.

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kroutshev:
Hi,
 i have made a mistake last night : i have connected a power supply too high in voltage for the preenfm2 first run board.
Now i have a screen with few whites and black squares. Regulator 7805 was very hot. I have tested it and same voltage in input and output.
I have replaced it with a new one. Now i have 10 v in input and 5,2V at output.
But still strange screen with indications.
Where i can find reference voltage to check which components are out of service please ?
Thanks for your help.

Xavier:
Hi


--- Quote from: kroutshev on November 13, 2014, 12:21:34 AM ---I have tested it and same voltage in input and output.

--- End quote ---

What voltage did you get at the output ? 10V ?
(To understand what did the composant received).


--- Quote from: kroutshev on November 13, 2014, 12:21:34 AM ---I have replaced it with a new one. Now i have 10 v in input and 5,2V at output.
But still strange screen with indications.
Where i can find reference voltage to check which components are out of service please ?
Thanks for your help.

--- End quote ---

Any picture would help ?
Does your preenfm2 still make sound ?
Does the display change when you turn encoder or press buttons ?

kroutshev:
Hi Xavier,
When i had the wrong power supply it was 18V.

About sound i havn't tested it and the display doesn't change when i turn encoder.
I will post a picture this evening.

kroutshev:
Here's my blank screen :

kroutshev:
and unfortunaly no sound  :-[

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