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| Thread ID: 61147 | 2005-08-26 04:17:00 | Monitor Problem | JJJJJ (528) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 383774 | 2005-08-27 00:45:00 | 1992? It deserves a medal. Or at least a burial at sea with full honours... |
Metla (12) | ||
| 383775 | 2005-08-27 00:49:00 | 1992, yes maybe it is time to break your affection with it. thanks JJJJJ |
ERR (8231) | ||
| 383776 | 2005-08-27 01:35:00 | A lot of the heaters from monitors run off the power chopper transformer then rectified and when the electrolytics go high in ESR, the brightness goes down not sure why the manufacturers do that the standard TV uses straight of a winding from the Fly Back Transformer FBT unrectified and there is never a problem there . I always thought that the HF component in the direct FBT feed caused hot-spots on the cathode through the filament -cathode capacitance, and that led to premature low-emission failure of the CRT . The identical CRT would perform for years longer on a 6 . 3 volt transformer, in fact I converted many sets to 6 . 3 volt 50Hz including my own and my family's (with instant-on half-voltage preheating for the older slow heat tubes) . It took some load off the line output transistor as well, and I bought a bulk lot of surplus transformers so conversions cost SFA . I'd prefer a stabilised and rectified dc supply off an SMPS any day over a loptx feed, cap failures notwithstanding . Cheers Billy 8-{) |
Billy T (70) | ||
| 383777 | 2005-08-27 01:58:00 | haha Billy T! You are a psycho! (in the good way!) :thumbs: So cool! I wish I had a friend like you! Must be cool being so knowing about electronics and such! You could've had a look at my old 19inch... I miss her, she looked so good when she displayed my Illustrator art... she was crisp, clear, nice resolution.. but then she stopped responding to me all of a sudden... my heart broke... I still can't turn her on anymore....I had to find someone else... but.. she's not the same... to dark, and she cant get sharp enough so its hard to read text.... You don't live in Hamilton by any chance? I'll buy you a beer :cool: I think i spend too much time drawing on my pc... :help: |
bizzack (7739) | ||
| 383778 | 2005-08-27 03:38:00 | 1992? It deserves a medal. Or at least a burial at sea with full honours... Sory. 2002. |
JJJJJ (528) | ||
| 383779 | 2005-08-27 03:41:00 | I always thought that the HF component in the direct FBT feed caused hot-spots on the cathode through the filament -cathode capacitance, and that led to premature low-emission failure of the CRT . The identical CRT would perform for years longer on a 6 . 3 volt transformer, in fact I converted many sets to 6 . 3 volt 50Hz including my own and my family's (with instant-on half-voltage preheating for the older slow heat tubes) . It took some load off the line output transistor as well, and I bought a bulk lot of surplus transformers so conversions cost SFA . I'd prefer a stabilised and rectified dc supply off an SMPS any day over a loptx feed, cap failures notwithstanding . Cheers Billy 8-{) Very interesting BillyT . But what the hell does it mean??????????? :confused: :confused: :confused: |
JJJJJ (528) | ||
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