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Author Topic: u5000 no video after new caps *FIXED*  (Read 1190 times)

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lilshawn

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u5000 no video after new caps *FIXED*
« on: March 14, 2014, 04:18:40 pm »
it's friday... i'm sick, i'm tired, and i just want this damn thing gone.

Unit fired up in the shop...had bleeding colors, jailbars, dark on one side. the usual for an old monitor.

changed out all the electrolytic caps on the neckboard and a bulk of them on the deflection board. c725, 107, 305, 310, 304, 729, 616, 607, 613, 616, 712 probably a bunch more, just what i have written down here. basically anything high voltage or over 10uf

pop it back in the cabinet...no video  :angry:

unit set up for 15k...i have high voltage (158 @ tp203). no raster if i turn up the screen on the flyback. got heater in the neck.

When i pull the power plug, the tube flashes a bit. (not normal white flashover, but strange colored flashover.

anything before i "friday" this thing into the parking lot?

EDIT:

found bad wire connection to user control panel. wiggling the connector caused the picture to come on and cut off (brightness or contrast)

resoldered both sets of pins and seems good now.  :angry: begone u5000!
« Last Edit: March 14, 2014, 05:26:33 pm by lilshawn »

grantspain

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Re: u5000 no video after new caps *FIXED*
« Reply #1 on: March 14, 2014, 05:46:35 pm »
they can be hard work these chassis,not one of my favourites

lilshawn

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Re: u5000 no video after new caps *FIXED*
« Reply #2 on: March 14, 2014, 06:49:17 pm »
so. many. bodges.  ;D

this chassis must have had no less than 5 separate bodges applied to it.

grantspain

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Re: u5000 no video after new caps *FIXED*
« Reply #3 on: March 14, 2014, 08:02:25 pm »
bodge is a brilliant word