Hello folks, I will preface this by saying I'm a beginner with electronic components but I do have a digital and analogue multimeter and know how to use them.
I've had this SONY KV-32XBR15 for 8 months and it's been working great until one day while playing a game the display just blinked off and I smelled a slight burning. Looking inside I found resistor R519 burnt up. Replacing the resistor results in it burning up again so obviously another component is causing this.
I have no picture (no OSD either), sound is okay, I can change inputs (since I can hear the sound from what I have in the inupts), the set still degausses, I feel static on the screen (paper also sticks), I have three glowing lights at the neck (not sure how bright they should glow, they're kind of dim), and I have no raster (the G2 adjustment on the neck board does nothing and the focus knob on the flyback has no effect).
Things I have removed and checked with the multimeter...
Transistors: Q502, Q503 (horizontal output transistor), Q504, Q505. All seem to test GOOD.
Diodes: D512 (damper diode), D501, D502, D511, D503, D505. Test GOOD.
Capacitors: C516, C517, C518, C519, C521, C522, C523. Test GOOD. C535 tests good but has a slight bulge on the bottom so I'm replacing.
Resistors: R519 BAD. R530, R533, R534, R542 GOOD.
I have not checked voltages yet. I'm thinking maybe the flyback transformer has failed but I haven't seen any cracks in the case and no arcing. I'm aware it can fail without these signs though.
If anyone could suggest some areas/components/voltages to check that would be much appreciated.
I am including the only service manual on this model I've been able to find.
Thank you to whoever can provide some assistance!
EDIT: I am also including the service manual for KV-27HSR10 which seems to have the same chassis/boards, but some component values differ.
https://www.dropbox.com/s/pilfzt303yxo21a/XBR Chassis.pdf?dl=0
I've had this SONY KV-32XBR15 for 8 months and it's been working great until one day while playing a game the display just blinked off and I smelled a slight burning. Looking inside I found resistor R519 burnt up. Replacing the resistor results in it burning up again so obviously another component is causing this.
I have no picture (no OSD either), sound is okay, I can change inputs (since I can hear the sound from what I have in the inupts), the set still degausses, I feel static on the screen (paper also sticks), I have three glowing lights at the neck (not sure how bright they should glow, they're kind of dim), and I have no raster (the G2 adjustment on the neck board does nothing and the focus knob on the flyback has no effect).
Things I have removed and checked with the multimeter...
Transistors: Q502, Q503 (horizontal output transistor), Q504, Q505. All seem to test GOOD.
Diodes: D512 (damper diode), D501, D502, D511, D503, D505. Test GOOD.
Capacitors: C516, C517, C518, C519, C521, C522, C523. Test GOOD. C535 tests good but has a slight bulge on the bottom so I'm replacing.
Resistors: R519 BAD. R530, R533, R534, R542 GOOD.
I have not checked voltages yet. I'm thinking maybe the flyback transformer has failed but I haven't seen any cracks in the case and no arcing. I'm aware it can fail without these signs though.
If anyone could suggest some areas/components/voltages to check that would be much appreciated.
I am including the only service manual on this model I've been able to find.
Thank you to whoever can provide some assistance!
EDIT: I am also including the service manual for KV-27HSR10 which seems to have the same chassis/boards, but some component values differ.
https://www.dropbox.com/s/pilfzt303yxo21a/XBR Chassis.pdf?dl=0
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