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Post by fuxtor on May 28, 2016 19:45:28 GMT -5
Alright, I figured if the unit is using a relay for protection then if the unit is in a protected state, jumping the relay could possibly fry whatever the high dc voltage is getting too... I will setup the jumper and report back....
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Post by fuxtor on May 30, 2016 21:00:40 GMT -5
Well, it appears as to get to the solder side of the power supply on this unit,one has to disassemble the entire rest of the unit!! I read about this issue on another forum site.... I think somebody actually cut a section of the bottom plate out with a dremel tool to avoid this dilemma. I think I am more inclined to do the same.Why on earth would the power supply board be so unaccessible??? I will have to report back when I am able access the board.
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Post by mastertech on May 30, 2016 21:40:18 GMT -5
Well what is even worse is that it is possible that the display itself has failed. These last tests were just an attempt to verify. The only time I have ever seen a display not light up when the unit stays powered on is a display failure. There is always a slim possibility something else is causing the display not to light up and this has to be verified in the display board itself. But the unit needs to be powered on. If you can figure out what has changed to cause it to not power on with the on button that would maybe be better anyways.
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Post by fuxtor on May 30, 2016 22:22:34 GMT -5
I will try.... I reflowed most solders on display board today just in case, a few weird things are happening now.... The lights that came on initially now are randomly blinking in some kind of pattern?? The main display is not lighting up tho.... I will try and get those relays clicking again...
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Post by mastertech on May 30, 2016 22:32:01 GMT -5
Did you try a reset again?
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Post by fuxtor on Jun 1, 2016 12:13:55 GMT -5
Didn't seem responsive.... I'll check again
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Post by fuxtor on Jun 1, 2016 12:14:32 GMT -5
Didn't seem responsive.... I'll check again
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Post by fuxtor on Jun 1, 2016 12:15:43 GMT -5
So what is the bad news if the display IS the problem?? Unobtanium component??
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Post by mastertech on Jun 1, 2016 22:15:12 GMT -5
Well there are a few components on that front board that can cause the display not to light up. This is why some testing need to be done. But you do need to find out why it is not turning on. Does it do anything at all when you push the power button? Is the standby light still lit?
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Post by fuxtor on Jun 4, 2016 11:05:41 GMT -5
Sorry for the delays, got a bit on my plate lately...lol, last I checked the lights were on at plugin but seemed a bit erratic. Sometime today I will confirm that standby light is lit, but I don't believe so... I will try to get it back to how it was, nothing changed aside from board being freed ?? Maybe I got something shorting out somewhere
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Post by fuxtor on Jun 12, 2016 16:05:46 GMT -5
Well, after playing around with connections the only way to get a relay to click is if I probe the solder side of display board with my finger. The standby light is on but I get zero main display lights after reflowing a lot of solders that looked old. Aside from cutting the bottom to access power supply and jump relay what else can be done at this point???
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Post by mastertech on Jun 13, 2016 10:45:40 GMT -5
I have been looking over the schematics on your receiver. What i am finding is that this unit has a very, very complex system to turn it on and off and for the display to function. Unfortunately this complexity is not required and one can only speculate why this method was chosen.
But, I can still talk you though a testing process but it becomes more difficult when someone has limited experience. Such as, when I indicate something that needs to be checked it helps when the tester can figure out on his own how to do that by looking at schematics and the unit. Also it is more difficult for me when days go by in between responses since I have to go back and refresh where we were at.
At this point I also do not think that jumping the relay is required. The base problem needs to be looked at and why the turning on of the unit has changed a few times.
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Post by fuxtor on Jun 13, 2016 12:11:27 GMT -5
I'm really unsure as to why it has changed, but I suppose all is not lost. I picked up a working unit so I figure I can use it for parts or sell off some . This receiver definitely is a huge jump from the vintage 2 channel receiver. I have to thank you for all the time you have given me, I did feel like I got some good experience from your posts!! I hope in the future this won't deter you from other projects I may encounter. Again great website with amazing people!!
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Post by mastertech on Jun 13, 2016 21:07:44 GMT -5
I hope in the future this won't deter you from other projects I may encounter. Definitely will not deter. Come back anytime with questions. |
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Post by fuxtor on Jun 13, 2016 22:25:37 GMT -5
Thanks again!
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