We have not had any reported problems with the PICSTART Plus development programmer power supply, but lately there were a number of similar posts on this list. If you have had problems with the PICSTART Plus Power supply, please contact the email address below with the above subject line unchanged (PICSTART Plus Power Supplies). If you can identify the model number of your power supply, that would help. If you can add a brief description of the failure, where you purchased the unit, and how long you had it before it failed that would help Microchip Development Systems improve the quality of these units. Darrel Johansen darrel.johansen@microchip.com