[TenTec] 961 power supply

[Robert S Jenkins]

Thanks Gary,

That is the sort of info I was looking for. I will check the rectumfrier to see if it is shorted. BTW, this supply does not have one big cap, but rather three 10,000 uF caps.

Robert
KG4KGL



> On Jun 27, 2017, at 09:33, Dukes HiFi <dukeshifi at comcast.net> wrote:
> 
> They’re not that hard to repair.
> 
> You have three first choices. 
> 
> 1) The rectifier bridge is shorted - R and R
> 2) The big filter cap is shorted - R and R
> 3) The supply is putting out too much and the OVP is operating. This should NOT pop the fuse though, this is a resettable SCR short that uses the current limit to deny power.
> 
> This antiquated circuit is difficult to troubleshoot if the problem is not one of the three things listed above. It is also sometimes even prone to oscillation. I have one in my basement that worked fine under no load but went into oscillation when the Omni 6 was turned on, in receive. It eventually took out nearly all of the semiconductors on the PC board and is now nothing but a parts mule.
> 
> Gary
> 
> W0DVN
> 
>