I had this receiver for a while.
I have picked it up from the bay(it was dead), with box and all the accessories.
It's almost new.
A while back I have worked on it, with help of some folks here, but we couldn't find anything wrong.
Now, I have pulled it out again and I have noticed, that this 3.3V rail is shorted.
Shows 1.6 Ohm, at many components.
The question is, how to find the shorted components?
I have tried usind the Ohm meter(Fluke 189) and I have found Q901 at 1.55 Ohm and IC610 at 1.54 Ohm.
I have even removed these and checked the components around them but, I could not find anything wrong.
I would use a thermal camera, but I don't have one yet.
I have borrowed one for like two days, but I couldn't really find the overheating part(couldn't see the parts through the camera). Something between the Ethernet port and IC1602 get to 106 F degree, but I couldn't pinpoint which part it was. I have even removed that IC, IC1808, D1601, but short was still there.
Any suggestions would be appreciated.
I have picked it up from the bay(it was dead), with box and all the accessories.
It's almost new.
A while back I have worked on it, with help of some folks here, but we couldn't find anything wrong.
Now, I have pulled it out again and I have noticed, that this 3.3V rail is shorted.
Shows 1.6 Ohm, at many components.
The question is, how to find the shorted components?
I have tried usind the Ohm meter(Fluke 189) and I have found Q901 at 1.55 Ohm and IC610 at 1.54 Ohm.
I have even removed these and checked the components around them but, I could not find anything wrong.
I would use a thermal camera, but I don't have one yet.
I have borrowed one for like two days, but I couldn't really find the overheating part(couldn't see the parts through the camera). Something between the Ethernet port and IC1602 get to 106 F degree, but I couldn't pinpoint which part it was. I have even removed that IC, IC1808, D1601, but short was still there.
Any suggestions would be appreciated.
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