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08 September 2009, 21:08
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#1 |
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Amiga Fetish
Join Date: Dec 2008
Location: Downstate NY
Age: 49
Posts: 267
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A1200 and RCA video out - no signal
I have no signal on RCA video out, but everything is fine with RF out and D-Sub 23. Any idea what can be wrong? Dead resistor/capacitor etc?
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08 September 2009, 22:13
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#2 |
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I hate potatos and shirts
Join Date: Oct 2007
Location: Sao Leopoldo / Brazil
Age: 58
Posts: 3,482
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Or cold joint on the connector leads into the mobo, or just a loose connector "live" metal or a bad cable.
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08 September 2009, 22:15
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#3 |
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Amiga Fetish
Join Date: Dec 2008
Location: Downstate NY
Age: 49
Posts: 267
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Cold joint - you mean inside/behind the RCA connector?
Cable is OK - tested with A520 modulator 
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09 September 2009, 00:11
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#4 |
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I hate potatos and shirts
Join Date: Oct 2007
Location: Sao Leopoldo / Brazil
Age: 58
Posts: 3,482
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Where the main lead goes into the motherboard. Normal issue for a connector used a lot (insertion/removing/re-insertion).
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09 September 2009, 14:53
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#5 |
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Italian Amiga Zealot
Join Date: Jan 2009
Location: Italy
Age: 36
Posts: 1,913
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I had exactly the same problem with my (old) A600 mobo. Too bad the Reset Timer gave up before I could repair it
 A lot of capacitors had leaked on it, so it might be that, as there are some capacitors which pass on the RCA output line. Giving a quick look on the schematics, they should be the C237 and C238, which should be near the CXA Encoder 
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12 September 2009, 06:09
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#6 |
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Amiga Fetish
Join Date: Dec 2008
Location: Downstate NY
Age: 49
Posts: 267
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C237 and C236 - I will check both, but first I need to order a new multimeter.
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27 November 2009, 04:36
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#7 |
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Amiga Fetish
Join Date: Dec 2008
Location: Downstate NY
Age: 49
Posts: 267
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Got fixed Video Out. One from resistors was dead.
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01 December 2009, 09:03
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#8 |
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Posts: n/a
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Hello
Could you please tell me what resistor was the problem? Cause I got the same problem with one A600 board... no RCA out...
Thanx for answer |
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05 December 2009, 22:27
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#9 |
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Amiga Fetish
Join Date: Dec 2008
Location: Downstate NY
Age: 49
Posts: 267
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I have no idea what number is of that resistor but is located near the capacitor and the video out:
 This photo was taken after I took off bad resistor. |
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05 December 2009, 22:40
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#10 |
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70X7
Join Date: Apr 2008
Location: Ἑλλάς
Posts: 1,078
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You have left it with out resistor?
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05 December 2009, 23:15
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#11 |
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Thalion Webshrine
Join Date: Jan 2004
Location: Oxford
Posts: 14,466
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Where are we looking?
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06 December 2009, 21:37
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#12 | |
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Amiga Fetish
Join Date: Dec 2008
Location: Downstate NY
Age: 49
Posts: 267
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Quote:
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06 December 2009, 21:41
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#13 | |
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Amiga Fetish
Join Date: Dec 2008
Location: Downstate NY
Age: 49
Posts: 267
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Quote:
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