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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Working on RCA RNSMU4336, SN A1901272410000314, with
screen rendition issues, for any/no input. Display stretched, gradually moving off-screen towards the left, eventually (~minutes) displaying black screen (all lamps functioning). All power circuits functioning, until VDGAWR1 shuts off (black). Haven't had much luck getting response from regular service channels in Canada and web search hasn't produced much info. Any hints? RL |
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On Saturday, April 17, 2021 at 2:36:19 PM UTC-4, legg wrote:
Working on RCA RNSMU4336, SN A1901272410000314, with screen rendition issues, for any/no input. Display stretched, gradually moving off-screen towards the left, eventually (~minutes) displaying black screen (all lamps functioning). All power circuits functioning, until VDGAWR1 shuts off (black). Haven't had much luck getting response from regular service channels in Canada and web search hasn't produced much info. Any hints? RL Since it displays a problem that evolves over minutes, I'd see if it could be detected thermally. When the image is moving left, spray it the main board with freeze spray to see if the cold has any effect. |
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