I have a Samlex SEC1235 on my bench and need a little help interpreting some results. I have a DBT on it and when I turn it on, the 100 watt bulb comes on and immediately goes out. Across my points B&C I have 120 VAC. On a known good unit (KGU) with same setup I have 48.9VAC
When I check my voltage between the +ve rectifier and -ve rectifier, I find 340VDC. When I switch off the unit, it does not dissipate very quickly where the good unit does.
I have replaced Q1, Q2 and all of the components in that section after the rectifier. They all test good at this time. I have also replaced the switching IC but I can't put my finger on what I am missing.
A little push in the right direction please.
I have a KGU running with the DBT so I know it works. I just don't get why the bulb doesn't stay partially lit like the KGU and why it does not dissipate the caps after shutdown. Caps are new as well.
When I check my voltage between the +ve rectifier and -ve rectifier, I find 340VDC. When I switch off the unit, it does not dissipate very quickly where the good unit does.
I have replaced Q1, Q2 and all of the components in that section after the rectifier. They all test good at this time. I have also replaced the switching IC but I can't put my finger on what I am missing.
A little push in the right direction please.
I have a KGU running with the DBT so I know it works. I just don't get why the bulb doesn't stay partially lit like the KGU and why it does not dissipate the caps after shutdown. Caps are new as well.
Attachments
-
101.3 KB Views: 12