15 October 2023, 15:29 | #1 |
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1084s just died!
I was pottering away getting some software transferred over to my CF card using WinUAE with my Amiga 1200 running in the background on my 1084s when suddenly there was a pop and the 1084s power light went out, the screen went black, and the monitor started letting out a high pitched whine.
The whine continues for a long as the monitor is on, and the display stays black. If I turn it off, the whine's pitch decreases until it stops. Everything was working beautifully up to this point! Any ideas? Last edited by dopefiend; 15 October 2023 at 17:13. |
15 October 2023, 15:39 | #2 |
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Probably the LOPT? My Trinitron died just as unexpectedly but I was away for 5 mins in the time when this happened. No idea what happened or if there was a sound. Until then the TV was faultless and picture was very sharp, amazing contrast and even geometry was perfect!
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15 October 2023, 17:35 | #3 |
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yeah, sounds like the LOPT. If so it's probably taken out the Line Output transistor with it but it's always a good idea to change that regardless.
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16 October 2023, 11:44 | #4 |
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Forgive me for being clueless, is the Line Output Transistor the Horizontal Output Transistor?
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16 October 2023, 12:01 | #5 |
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Yeps.
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16 October 2023, 12:24 | #6 |
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25 May 2024, 10:23 | #7 |
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Finally got around to working on this. I replaced the LOPT/Flyback, didn't get around to the Line Output Transistor/ HOPT, but it seems like the flyback was at least part of the problem as I have a beautiful picture now.
I have some weird issues, using Testbild.prg on my c64 to focus etc and I now see a little overlap of horizontal lines on the left hand side, only in this one test pattern, see here https://imgur.com/a/5BEB8LP Also when adjusting the horizontal width and centering, sometimes the picture disappears but if I wiggle the H width knob it comes back. Seems like dry or cracked solder right? On the connections to the actual pots? Anything else that could cause this? Last edited by dopefiend; 25 May 2024 at 10:38. |
25 May 2024, 10:56 | #8 |
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cracked solder right
this. |
25 May 2024, 11:45 | #9 |
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Ok so I desoldered and resoldered all those pots at the back. But now it won't turn on at all! No power light, nothing!
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25 May 2024, 12:08 | #10 |
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I figured it out! There was also some damage to the power cord. Found the break and just shortened the cord and we're good!
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25 May 2024, 18:36 | #11 | ||
Ex nihilo nihil
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Quote:
Quote:
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25 May 2024, 19:46 | #12 |
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Not here - had to shrink the original..
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26 May 2024, 00:11 | #13 |
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Thanks
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