Ohmerone
Well-known member
Poor Contrast: 9200 Series
Defective C828 2200 16v's
.................................................
Poor contrast,greenish picture etc.
Defective EEPROM: Ic103
................................................
Vertical height Low or foldover..
C466 470 25v's
................................................
Dead,may hear HV for a sec ..
B+ to high around 200v's or better @R854
disconnect r854 put bulb at supply side and to cold ground
troubleshoot power supply!!
just replace IC806 and check R826 for open ..check or change IC805
tip: when ic806,or IC805 not working all secondary voltages will be high..
be very careful other supply lines will also be to high going to drive ics..
and will shortout ICs..
.....................................................................................................
I will add more tips and tricks Later...
Edited for cap kit list
Looking over a few of the WG9200 & 9202
I have a little smaller cap list then replacing all of them
and after testing the caps with the Sencore LC103 Cap Analyzer
And confirming they are bad or high ESR and my recommened list of caps
found bad in a few chassis,anyone can always replace all the caps if they like.
C828 2200MF 25v
C823 470 MF 25V
C827 470 MF 50V
C847 470 MF 25V
C820 10 MF 50V
C806 1 MF 50V
C814 10 MF 50V
C813 10 MF 50V
C810 220 MF 35V
C844 4.7 MF 400V
C838 220 MF 16V
C839 10 MF 250V
C834 100 MF 16V
C832 100 MF 16V
C329 100 MF 16V
C423 4.7 MF 400V
C417 22 MF 250V
C447 10 MF 250V
C415 1000MF 16V
C414 220 MF 16V
C904 47 MF 50V
C901 10 MF 50V
C907 100 MF 50V
C452 47 MF 50V
C445 47 MF 50V
C466 470 MF 25V
C451 10 MF 250V
C314 2200 MF 16V
C306 2200 MF 25V
C308 220 MF 50V
Neck Board.
C222 100 MF 16V
C235 100 MF 16V
C231 10 MF 250V
C223 100 mfd 16v on schematic and 22mfd16v's found in circuit
C229 100 mfd 16v's
C224 100 mfd 16v's
Also Ic 301 Vertical Ic, replacement # TDA8172 or Nte1767.
and new heatsink compound to keep the Ic cool.Or use a Thermal Pad.
C240 100 MF 16V Need to replace the vertical IC along with a cap kit.
C232 33 MF 250V Or if the vertical ic looks and test good,you need to clean off the old HS Compound
C250 10 MF 50V and add new Heatsink compound to the IC,so the heat can transfer to the heatsink!!
C246 10 MF 250V
C215 100 MF 16v
C230 100 MF16v
FACTORY MODE COLOR GAIN ADJUSTMENT PROCEDURE:
1. Warm up Procedure:
Apply power and a video signal to the monitor so that there is a picture on the screen for about 20 minutes before making any adjustments. This will give the monitor a sufficient time to warm up so that the adjustments that are made will not change.
1.1 Key Description
DOWN/UP
Scroll through various Icons on Main Factory Menu.
When in the COLOR GAIN icon mode - Toggle through the GAIN MODE, BIAS MODE and OSD MODE.
When in GAIN MODE, BIAS MODE and OSD MODE;
Adjust values after a parameter has been selected.
MODE
Saves adjusted value and return to Main FACTORY MENU.
SEL
Selects Icon on Main FACTORY MENU.
When in GAIN MODE, BIAS MODE and OSD MODE, selects parameter to be adjusted.
When in RE "RECALL", saves all changes and exits FACTORY MENU Mode.
All adjustments are made by searching and selecting an icon using the digital control panel buttons.
1.2 Factory Mode
****IMPORTANT NOTE: WRITE DOWN MENU VALUES BEFORE CHANGING THE VALUES; ADJUSTMENTS IN FACTORY MENU WILL BECOME THE NEW SAVED RECALL VALUES IN THE USER MENU.****
To access FACTORY MENU, press DOWN and SEL simultaneously and hold.
After adjustments are made, to exit out of the FACTORY MENU,
go to RE "RECALL" press SEL.
Observe the message "EXITING FACTORY MENU CHANGES SAVED".
Factory OSD Operation
OSD Window for FACTORY MODE:
Example Factory Mode Menu:
FACTORY MODE
15.75KHz / 60Hz
RE
COLOR GAIN
WELLS-GARDNER V1.16
Note:
The icons are white, text is white and all rows except row 6.
The highlighted icon is in red color.
The icon and description in magenta row 5, matches the icon selected.
There is no timeout on the Factory menu.
1.2.1 COLOR GAIN ADJUSTMENT INSTRUCTIONS
Setup with light meter if available.
Use high level white video for GAIN MODE adjustment.
Change pattern to low level white video to adjust BIAS MODE video background.
****DO NOT SELECT "SB" IN GAIN MODE AND CHANGE ITS VALUE, AS THIS WILL CHANGE ALL 3 COLORS AND MAY CAUSE BLEEDING IN THE VIDEO COLORS, SATURATING VIDEO DRIVE LEVELS.****
****DO NOT SELECT "CB" IN BIAS MODE AND CHANGE ITS VALUE, AS THIS WILL CHANGE ALL 3 COLORS AND MAY CAUSE UN-DESIRABLE CUTOFF OF VIDEO BACKGROUND LEVELS.****
1. DOWN/UP
Scroll through various Icons on Factory Menu to COLOR GAIN icon.
2. SEL
Select the COLOR GAIN Icon on the Factory Menu. – enters GAIN MODE menu.
3. SEL
Select the color to change by pressing SEL until R, G or B is highlighted.
4. DOWN/UP
Decrease/increase gain of the chosen color.
5. SEL
To scroll to next color, and repeat STEP 4 for each color for desired color temperature .
6. SEL
To scroll back to GAIN MODE
7. UP/DOWN
To change to BIAS MODE.
8. SEL
Select the color to change by pressing SEL until R, G or B is highlighted.
9. DOWN/UP
Decrease/increase bias of the chosen color.
10. SEL
To scroll to next color, and repeat STEP 4 for each color for desired color temperature .
11. After adjustments are made, to exit out of the FACTORY MENU,
go to RE "RECALL" press SE or MODE button.
Observe the message "EXITING FACTORY MENU CHANGES SAVED".
This will become the new RECALL values in the USER MENU and will also remain the same after power is recycled.
Example Factory Gain Mode Menu:
UP/DOWN button to toggle between GAIN MODE, BIAS MODE and OSD MODE.
Row : 1 GAIN MODE
Row : 2 SB 128
Row : 3 R 255
Row : 4 G 237
Row : 5 B 217
Note: The text is red except when a feature is selected, then the text is white for row 1.
The text is white, except when selected, then it is red for rows 2, 3, 4, 5.
There is no timeout on the Factory menu.
Example Factory Bias Mode Menu:
"G" Green Bias is selected; use UP/DOWN buttons to change value.
SEL button to move highlighted parameter.
BIAS MODE
CB 068
R 092
G 124
B 128
Note:The text is red except when a feature is selected, then the text is white for row 1.
The text is white, except when selected, then it is red for rows 2, 3, 4, 5.
Example Factory OSD Mode Menu:
OSD MODE
OC 105
Note:The text is red except when a feature is selected, and then the text is white for row 1.
The text is white, except when selected, then it is red for row 2.
Copy and pasted for procedures to adjust monitor correctly.
Defective C828 2200 16v's
.................................................
Poor contrast,greenish picture etc.
Defective EEPROM: Ic103
................................................
Vertical height Low or foldover..
C466 470 25v's
................................................
Dead,may hear HV for a sec ..
B+ to high around 200v's or better @R854
disconnect r854 put bulb at supply side and to cold ground
troubleshoot power supply!!
just replace IC806 and check R826 for open ..check or change IC805
tip: when ic806,or IC805 not working all secondary voltages will be high..
be very careful other supply lines will also be to high going to drive ics..
and will shortout ICs..
.....................................................................................................
I will add more tips and tricks Later...
Edited for cap kit list
Looking over a few of the WG9200 & 9202
I have a little smaller cap list then replacing all of them
and after testing the caps with the Sencore LC103 Cap Analyzer
And confirming they are bad or high ESR and my recommened list of caps
found bad in a few chassis,anyone can always replace all the caps if they like.
C828 2200MF 25v
C823 470 MF 25V
C827 470 MF 50V
C847 470 MF 25V
C820 10 MF 50V
C806 1 MF 50V
C814 10 MF 50V
C813 10 MF 50V
C810 220 MF 35V
C844 4.7 MF 400V
C838 220 MF 16V
C839 10 MF 250V
C834 100 MF 16V
C832 100 MF 16V
C329 100 MF 16V
C423 4.7 MF 400V
C417 22 MF 250V
C447 10 MF 250V
C415 1000MF 16V
C414 220 MF 16V
C904 47 MF 50V
C901 10 MF 50V
C907 100 MF 50V
C452 47 MF 50V
C445 47 MF 50V
C466 470 MF 25V
C451 10 MF 250V
C314 2200 MF 16V
C306 2200 MF 25V
C308 220 MF 50V
Neck Board.
C222 100 MF 16V
C235 100 MF 16V
C231 10 MF 250V
C223 100 mfd 16v on schematic and 22mfd16v's found in circuit
C229 100 mfd 16v's
C224 100 mfd 16v's
Also Ic 301 Vertical Ic, replacement # TDA8172 or Nte1767.
and new heatsink compound to keep the Ic cool.Or use a Thermal Pad.
C240 100 MF 16V Need to replace the vertical IC along with a cap kit.
C232 33 MF 250V Or if the vertical ic looks and test good,you need to clean off the old HS Compound
C250 10 MF 50V and add new Heatsink compound to the IC,so the heat can transfer to the heatsink!!
C246 10 MF 250V
C215 100 MF 16v
C230 100 MF16v
FACTORY MODE COLOR GAIN ADJUSTMENT PROCEDURE:
1. Warm up Procedure:
Apply power and a video signal to the monitor so that there is a picture on the screen for about 20 minutes before making any adjustments. This will give the monitor a sufficient time to warm up so that the adjustments that are made will not change.
1.1 Key Description
DOWN/UP
Scroll through various Icons on Main Factory Menu.
When in the COLOR GAIN icon mode - Toggle through the GAIN MODE, BIAS MODE and OSD MODE.
When in GAIN MODE, BIAS MODE and OSD MODE;
Adjust values after a parameter has been selected.
MODE
Saves adjusted value and return to Main FACTORY MENU.
SEL
Selects Icon on Main FACTORY MENU.
When in GAIN MODE, BIAS MODE and OSD MODE, selects parameter to be adjusted.
When in RE "RECALL", saves all changes and exits FACTORY MENU Mode.
All adjustments are made by searching and selecting an icon using the digital control panel buttons.
1.2 Factory Mode
****IMPORTANT NOTE: WRITE DOWN MENU VALUES BEFORE CHANGING THE VALUES; ADJUSTMENTS IN FACTORY MENU WILL BECOME THE NEW SAVED RECALL VALUES IN THE USER MENU.****
To access FACTORY MENU, press DOWN and SEL simultaneously and hold.
After adjustments are made, to exit out of the FACTORY MENU,
go to RE "RECALL" press SEL.
Observe the message "EXITING FACTORY MENU CHANGES SAVED".
Factory OSD Operation
OSD Window for FACTORY MODE:
Example Factory Mode Menu:
FACTORY MODE
15.75KHz / 60Hz
RE
COLOR GAIN
WELLS-GARDNER V1.16
Note:
The icons are white, text is white and all rows except row 6.
The highlighted icon is in red color.
The icon and description in magenta row 5, matches the icon selected.
There is no timeout on the Factory menu.
1.2.1 COLOR GAIN ADJUSTMENT INSTRUCTIONS
Setup with light meter if available.
Use high level white video for GAIN MODE adjustment.
Change pattern to low level white video to adjust BIAS MODE video background.
****DO NOT SELECT "SB" IN GAIN MODE AND CHANGE ITS VALUE, AS THIS WILL CHANGE ALL 3 COLORS AND MAY CAUSE BLEEDING IN THE VIDEO COLORS, SATURATING VIDEO DRIVE LEVELS.****
****DO NOT SELECT "CB" IN BIAS MODE AND CHANGE ITS VALUE, AS THIS WILL CHANGE ALL 3 COLORS AND MAY CAUSE UN-DESIRABLE CUTOFF OF VIDEO BACKGROUND LEVELS.****
1. DOWN/UP
Scroll through various Icons on Factory Menu to COLOR GAIN icon.
2. SEL
Select the COLOR GAIN Icon on the Factory Menu. – enters GAIN MODE menu.
3. SEL
Select the color to change by pressing SEL until R, G or B is highlighted.
4. DOWN/UP
Decrease/increase gain of the chosen color.
5. SEL
To scroll to next color, and repeat STEP 4 for each color for desired color temperature .
6. SEL
To scroll back to GAIN MODE
7. UP/DOWN
To change to BIAS MODE.
8. SEL
Select the color to change by pressing SEL until R, G or B is highlighted.
9. DOWN/UP
Decrease/increase bias of the chosen color.
10. SEL
To scroll to next color, and repeat STEP 4 for each color for desired color temperature .
11. After adjustments are made, to exit out of the FACTORY MENU,
go to RE "RECALL" press SE or MODE button.
Observe the message "EXITING FACTORY MENU CHANGES SAVED".
This will become the new RECALL values in the USER MENU and will also remain the same after power is recycled.
Example Factory Gain Mode Menu:
UP/DOWN button to toggle between GAIN MODE, BIAS MODE and OSD MODE.
Row : 1 GAIN MODE
Row : 2 SB 128
Row : 3 R 255
Row : 4 G 237
Row : 5 B 217
Note: The text is red except when a feature is selected, then the text is white for row 1.
The text is white, except when selected, then it is red for rows 2, 3, 4, 5.
There is no timeout on the Factory menu.
Example Factory Bias Mode Menu:
"G" Green Bias is selected; use UP/DOWN buttons to change value.
SEL button to move highlighted parameter.
BIAS MODE
CB 068
R 092
G 124
B 128
Note:The text is red except when a feature is selected, then the text is white for row 1.
The text is white, except when selected, then it is red for rows 2, 3, 4, 5.
Example Factory OSD Mode Menu:
OSD MODE
OC 105
Note:The text is red except when a feature is selected, and then the text is white for row 1.
The text is white, except when selected, then it is red for row 2.
Copy and pasted for procedures to adjust monitor correctly.
Last edited: