Just repaired a Viewsonic 2030B, Model VS10772 20" diagonal Manufactured Dec. 2005. that did not power-up. Cracking the shell open is tricky; because the front bezel is hooked to the metal chassis [see pic “clamps”] you need to gently pry the back shell front the bezel by pushing in numerous plastic tags [see pic “shell”] until you can lift the back shell away from the bezel/chassis. Only then can you separate the bezel from the chassis, see pic “chassis'.
There are four main boards [1] Power Board model EADP-64BF, see pic “pwr” with 120/220VAC input [2] Processing/VGA/DVI board model DALAVPMB011, see pic “cpu” [3] Backlight board model NV20-6009 FVP55106432B with 6 outputs see pic “backlight” [4] USB hub board 1-in to 4-out see pic “usb”
Visual inspection shows [a] on the Power board, see pic “pwr-cap”: a bulged cap LTEC 470mic 16V type LZG105*C. There are some discoloration on the Power board [b] on the Processing/VGA/DVI board, see pic “cpu-caps”: two bulged caps TEAPO 330mic 16V Type SS105*C see pic "cpu-caps".
I replaced these three caps with 330mic 25V 105*C [Sprague caps from HSC in Sunnyvale] that I had lying around, and the screen is now working. The components close to the discoloration are still functional; I guess they overheated because of the LTEC cap failure.
Hope this helps.
There are four main boards [1] Power Board model EADP-64BF, see pic “pwr” with 120/220VAC input [2] Processing/VGA/DVI board model DALAVPMB011, see pic “cpu” [3] Backlight board model NV20-6009 FVP55106432B with 6 outputs see pic “backlight” [4] USB hub board 1-in to 4-out see pic “usb”
Visual inspection shows [a] on the Power board, see pic “pwr-cap”: a bulged cap LTEC 470mic 16V type LZG105*C. There are some discoloration on the Power board [b] on the Processing/VGA/DVI board, see pic “cpu-caps”: two bulged caps TEAPO 330mic 16V Type SS105*C see pic "cpu-caps".
I replaced these three caps with 330mic 25V 105*C [Sprague caps from HSC in Sunnyvale] that I had lying around, and the screen is now working. The components close to the discoloration are still functional; I guess they overheated because of the LTEC cap failure.
Hope this helps.
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