First a little history, maybe this will help. A friend has given me three TVs, a 22 inch Emerson 32 inch Sony and this one. All three were taken out by a nearby lightning strike, the only one that was on and being watched was the one in this post. The other two only had blown fuses internally, there was no other damage in his house. So, having said all of this would tend to make one think the cable had something to do with the surge.
When powering the TV on there's a window comes up in the corner showing different inputs available plus in the middle of the screen is a message saying "failed to receive broadcast E 202". The TV will only remain on for 10 or 15 seconds then it shuts down. After the TV is powered on in about five seconds the speakers start with an ever increasing volume of static for an additional five or 10 seconds and then shuts itself down.
It's nearly impossible to check voltages in the short time it stays on. Here is what I have done so far. I am a real Novice, these don't seem right to me.
D7903 = .675 in circuit, forward bias
.924 reversed, red probe on end with ring
D7922 = .672
1.370 tested same as above
The following resistors are color-coded to be 7.5 k ohms.
Violet, green, orange, gold. I hope I did that right.
R7563 = 2.07 k in circuit. 15.09 k Out of circuit with one leg lifted.
R7562 = Same as above.
R7565 = 4.80 k in circuit. 15.09 k. Out of circuit with one leg lifted.
D7918 = .312 forward
1.030 reversed, not OL
D7121 = .216 forward
1.270 reversed, not OL
Hopefully someone will have a clue as to some of these readings to be right wrong or okay. When I had the power supply board removed, from the backside I did notice some very very slight darkening around those three resistors, that's kind of why I looked at those closely.
I searched all round this forum at length for anyone having issues with increasing static coming from the speakers and then shut down. Seems to be a real odd duck. Thank you so much in advance for any help you may provide.
Well it looks like I'm only able to upload one photo of five that I have. As soon as I figure out how to upload the other four I'll do so, thank you.
When powering the TV on there's a window comes up in the corner showing different inputs available plus in the middle of the screen is a message saying "failed to receive broadcast E 202". The TV will only remain on for 10 or 15 seconds then it shuts down. After the TV is powered on in about five seconds the speakers start with an ever increasing volume of static for an additional five or 10 seconds and then shuts itself down.
It's nearly impossible to check voltages in the short time it stays on. Here is what I have done so far. I am a real Novice, these don't seem right to me.
D7903 = .675 in circuit, forward bias
.924 reversed, red probe on end with ring
D7922 = .672
1.370 tested same as above
The following resistors are color-coded to be 7.5 k ohms.
Violet, green, orange, gold. I hope I did that right.
R7563 = 2.07 k in circuit. 15.09 k Out of circuit with one leg lifted.
R7562 = Same as above.
R7565 = 4.80 k in circuit. 15.09 k. Out of circuit with one leg lifted.
D7918 = .312 forward
1.030 reversed, not OL
D7121 = .216 forward
1.270 reversed, not OL
Hopefully someone will have a clue as to some of these readings to be right wrong or okay. When I had the power supply board removed, from the backside I did notice some very very slight darkening around those three resistors, that's kind of why I looked at those closely.
I searched all round this forum at length for anyone having issues with increasing static coming from the speakers and then shut down. Seems to be a real odd duck. Thank you so much in advance for any help you may provide.
Well it looks like I'm only able to upload one photo of five that I have. As soon as I figure out how to upload the other four I'll do so, thank you.
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