Re: [AH] So many 1n400x diode failures

From Kenny Balys
Sent Fri, Mar 15th 2019, 15:17

Hmmm.... really good suggestion. Will do just that.



On 15.03.19 15:15 , negativesaucer wrote:
> I'd be tempted to check my mains with a meter and scope if I were blowing
> through psu rectifiers
>
> On Fri, Mar 15, 2019, 8:16 AM Kenny Balys <xxxxx@xxxxxxxx.xxx
> <mailto:xxxxx@xxxxxxxx.xxx>> wrote:
>
>
>
>     In the past month I have had 3 pieces of equipment with bad
>     1N400x diodes functioning as rectifiers in a power supply.
>
>     In each case, the decoupling capacitors along side in said power
>     supply were beyond their limits.
>
>     These were all late 1970s and early 1980s pieces of gear.
>
>     Was there something wrong with late 70s early 80s 1N4000 series
>     diodes?
>
>     Starting to think I should just change these out whenever I
>     recap a power supply from that era.
>