>> I presume you let the device cool down gradually to below 40 deg C before
>> applying any power to the chip - we killed a couple of 27C256 EPROMS a few
>> years ago when we put them in the programmer soon after our UV eraser...
>>
>> Rgds
>>
>> Mike
>>
>
>Hi there,
>        Would I be correct in assuming then from that last comment that it
>is not recomended to program PICs directly after removing them from the UV
>eraser ??? Even when your not overheating them beforehand ??

Hi Dave,

We had to let the devices cool down gradually - hopefully to room temperature
otherwise they tended to fail quite quickly. Also it didn't help if we put them
in the fridge, the thermal stress probably broke a few bonds...

Rgds

Mike