cwstrong
Member
Kortek 3414df Chassis Troubleshooting - Power Supply Voltages
I've been troubleshooting this chassis for the past couple of weekends, but I'm getting nowhere fast. It's time to ask for some assistance from the group. I've read the Kortek Monitors Tips,Tricks and Cap Kits thread, but I'm still stuck.
Symptoms:
Chassis is completely dead although 120vac is present. A full cap kit has been completed, but I don't appear to be getting any VDC in the secondary. The fuse at F101 is not blown and IC103 has been replaced. The bridge rectifier at D120 also tests good and has an output of 160vdc. I'm using the negative terminal of the filter cap at C114 for the hot ground. There is no visible damage to the board or any components.
The service manual states to check for 80vdc on D110. I have zero volts being output from SMPS (T101), although 160vdc is present on 2 of the 4 pins on the primary side. The other 2 pins appear to be grounded.
Any suggestions on what to check next? I have the 3414df schematic, but determining what voltage should be present where is still somewhat confusing.
Thanks in advance for any assistance or at least a push in another direction.
I've been troubleshooting this chassis for the past couple of weekends, but I'm getting nowhere fast. It's time to ask for some assistance from the group. I've read the Kortek Monitors Tips,Tricks and Cap Kits thread, but I'm still stuck.
Symptoms:
Chassis is completely dead although 120vac is present. A full cap kit has been completed, but I don't appear to be getting any VDC in the secondary. The fuse at F101 is not blown and IC103 has been replaced. The bridge rectifier at D120 also tests good and has an output of 160vdc. I'm using the negative terminal of the filter cap at C114 for the hot ground. There is no visible damage to the board or any components.
The service manual states to check for 80vdc on D110. I have zero volts being output from SMPS (T101), although 160vdc is present on 2 of the 4 pins on the primary side. The other 2 pins appear to be grounded.
Any suggestions on what to check next? I have the 3414df schematic, but determining what voltage should be present where is still somewhat confusing.
Thanks in advance for any assistance or at least a push in another direction.