jimh
New Member
Posts: 10 
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Post by jimh on Jul 27, 2016 21:24:31 GMT -5
In No Protect self-diagnostic check (Tone+Info+Main Power buttons), an error is shown as follows: C1-6. BUS DSP:NGThere is no sound. There are no other errors shown. Neither unplugged from a/c, disconnected speakers, nor factory reset fixes the problem. Any suggestions on further diagnostics or troubleshooting options for this error would be greatly appreciated. Jim  |
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Post by mastertech on Jul 28, 2016 11:56:28 GMT -5
That particular error means that a problem has been detected between the DSP ic241 and the CPU ic221. Now there could be various reasons for this to happen and testing would be required to try to find out what is not causing it to lead to an assumption.
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jimh
New Member
Posts: 10
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Post by jimh on Jul 28, 2016 19:58:31 GMT -5
Thanks for the reply MasterTech. What types of tests could I try, using my digital Fluke multimeter, to isolate the problem? Happy to give it a shot. BTW, I will be without Internet access for a few days, so will look for your reply when I am back online.
Many thanks, Jim
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jimh
New Member
Posts: 10
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Post by jimh on Aug 20, 2016 16:15:13 GMT -5
Hello Master Tech, I am now back online. Any guidance for testing these two ICs?
Best regards, Jim
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jimh
New Member
Posts: 10
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Post by jimh on Aug 21, 2016 8:18:03 GMT -5
These may be the source of the problem. See images. Can these components be obtained individually and replaced using soldering iron? Jim   |
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jimh
New Member
Posts: 10
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Post by jimh on Aug 21, 2016 16:52:43 GMT -5
Unlikely I can fix this, as R2429 and surrounding area appears too corroded. Any sources for a used P.C.B YF985?
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Post by mastertech on Aug 21, 2016 20:03:52 GMT -5
Is that the corrosion in the picture you posted above?
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jimh
New Member
Posts: 10
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Post by jimh on Aug 21, 2016 20:56:43 GMT -5
It appears to be corrosion. Top photo shows before and bottom shows after I cleaned it with electronic spray cleaner.
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jimh
New Member
Posts: 10
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Post by jimh on Sept 10, 2016 8:10:10 GMT -5
Update: found "part out" unit on Ebay for $49 + free shipping. Turns out it was in "protection mode." Correct button sequence restored power and it works great. Will part out my unit, noting HDMI PCB is inop.
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Post by mastertech on Sept 10, 2016 21:36:21 GMT -5
Well that worked out good for you.  |
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