All pins of the PIC microcontroller have the same voltage (except VDD VSS), what could be the problem?

Question

Electronics

My microcontroller is pic16f628a . I use MPLAB X IDE, Hi-Tech compiler, and Pickit2 programmer.
I am writing a program, the usual blinking of an LED. I simulate in Proteus 7, everything works. I am flashing the MK, I am assembling a circuit on the breadboard. Does not work.
What has already happened - 1 time mixed up the polarity of the power supply.
What I found is that all PORTs have the same voltage, even if you just write a program to turn them off to 0, they still have a voltage of 1.5-1.6 V, when powered by 3.3V.
Is MK dead?
PS is stitched normally, read by the programmer too

Answer 1

More likely. Reversal is such a thing.

Answer 2

If programmed, then the I / O ports are alive (at least those through which the firmware is uploaded). Have you tried to write a program so that you blink through some pin from those for programming, and then connect the LED to it?
Also, is the LED working?