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HELP! - Replacing Voltage Regulator IC and Main Filter Capacitor.
dabone:
"Is there anything special I need to do before removing it and replacing it with a new one?"
Yeah, unplug the monitor, and discharge the anode wire before you take it loose.
;D
Once you have unplugged it and discharged it , there should be no more harmful voltage on the pcb. (But watch out for that tube, remember to discharge it again before you hook up the anode wire)
BTW, this is not the case for all monitors.. Esp a G07 with a blown fuse.
That one will remind you of how much a cap can hold.
Later,
dabone
Ken Layton:
The regulator IC will have a thin mica insulator between it and the aluminum frame. Don't forget to smear a thin film of silicone heat sink grease on the insulator and the rear of the replacement regulator IC.
Wyluli:
What is the best way to discharge the main capacitor?
What specific tool(s) should I use?
Summary:
Cap kit done. Had to discharge monitor, remove pcb and neckboard. De-solder old capacitors one at a time, solder on new capacitors one at a time making sure polarity is correct. Tested monitor, works but still has wavy lines.
2. (NEXT thing to try) - To install Voltage regulator - Will need to remove pcb to do this so you need to discharge monitor, remove pcb and neckboard. Unscrew and remove old voltage regulator. Smear a thin film of silicone heat sink grease on the insulator and the rear of the replacement regulator IC. Install new Voltage regulator.
3. (NEXT thing to try after #2) - To install Main capacitor - Will need to remove pcb to do this so you need to discharge monitor, remove pcb and neckboard. MUST discharge the main capacitor before removing! After capacitor is discharged you can then de-solder and install new capacitor.
Ken Layton:
With the power off and assuming the circuit board is right in front of you here's how to discharge the main filter capacitor:
Use a screwdriver or pliers (with insulted handles!) and short across both capacitor terminals together. There might be a snap or arc sound or their might not be. Anyway merely touching the capacitor's two terminals together discharges it.
By the way, be careful when unsoldering the old voltage regulator. The copper foil traces on the circuit board are very delicate in that area.
Wyluli:
I replaced the voltage regulator, but now my monitor will not turn on.