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Last edited by petehall347; 12-01-2023, 01:29 PM. -
something strange happening in my last reply .. second link again here .its just an example and not saying buy from there
https://allegro.pl/oferta/zrodlo-odn...69-12780645910Comment
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Is this an SB or S8?Attached FilesComment
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But this photo looks like 8. Can you send me a link to what you googled please?
it is SOD-323Attached FilesComment
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Pete, I ordered both anyway one is 50v and the other is 30v. That's the biggest diff I can see.
Mouser order placed. Will arrive Tuesday. Never been so nervous. LolLast edited by mitsu2k; 12-01-2023, 04:07 PM.Comment
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2n might be RLSD32A361C tvs esd protection . might not as well . cant find any pics .Comment
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What is this component? Anyone know? I think it is a zener but it measures 1v. I cannot make sense whether that is a WI or W1Attached FilesComment
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SUCCESS!!! Replaced those burned components and a few more that were shorted on the logic board and this is the result. I want to give a big shout out and THANK YOU to CapLeaker, SAM_SAM_SAM and Petehall347 for all your help and dedication. You guys are absolutely amazing and I could not have done this without you. THANK YOU!!Attached FilesComment
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glad you got it fixed .well done .Comment
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I glad you got it fixed
So what were all of the bad parts did you have to replace that was either burnt out or bad when tested
I am very lazy to go back and read all the posts that were written about this issue with this inverterComment
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the parts were in the area i suspected earlier on .i have never seen one of these units in front of me so i could only guess the general area like around an mcu. i should have said look for the clock crystal that's there in most cases next to them .would have been good to know what caused the damage whether it being bad design or bad quality parts etc etc . .Comment
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They were right next to the crystals. The parts I replaced were:
3 mosfets (SOT-23) One was burned and the other two were shorted.
4 shorted diodes (One was burned) (SOD-323)
3 zener diodes (should have been SOD-323 but I used through hole wire leads instead)
I had trouble with the zener diodes trying to figure out the marking whether it was "WI" or "W1". neither of these made any sense because my research showed the WI is 12v and W1 is 2.7v but when I found some good ones on the board and tested them, they measured 3.4v and 3.7v. So I had some 3.6v through hole zeners so I just bent the leads and soldered them to the pads. Looks like it did the trick.Last edited by mitsu2k; 12-05-2023, 10:06 PM.Comment
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Yes Pete you kept asking for the model of the controller. I should have paid more attention but honestly that board intimidated me and I was too lazy to scrape off all the silicone they coated the board with. I should have listened to you earlier but I had tunnel vision and did not think the problem was on that board. Obviously I was wrong and I learned a lot from you and the other gentlemen. Next time I need to keep an open mind, get over my fear, and be more thorough with visual inspection.Comment
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Here are some photos. One is before removal of the components and the other is after I removed them and cleaned up the pads.Attached FilesLast edited by mitsu2k; 12-06-2023, 12:01 AM.Comment
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Yes the two burned components (one diode & one mosfet) were open. The rest of the components in the other side were shorted). I suspect something shorted and went down the line and fried everything else. It ran all day yesterday with no problems and still running good now.Comment
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My parent's solar inverter died after 5 years of good service.
It's a called hybrid inverter:
- It can go with or without batteries
- It has 2 MPPT (8 330W panels in 2 strings) -> 5280Wp
- A 20kWh lithium battery previously used in a Nissan leaf (14S at 4.1V max) -> 57.4V
Panel is showing error 17 and the battery connection has disappeared. On the other hand, is delivering load, MPPTs are working and it's exporting energy to the GRID. Not that "bad".
Let's open it......
I see that 150A fuse is gone and the... -
I just got this tv today and it appeared to have no backlight on. After taking off the rear cover and checking again in the dark I can see that MAYBE one quadrant is lit.. But still it's quite dim. I was going to check the LEDs with my tester, and I found LED 1 and LED 2 + pins on the wire from the inverter, but I couldn't identify a ground. Nonetheless I tried using a mounting screw on the inverter board and also the chassis as ground but regardless my tester reads 300 which is what it reads when there is no voltage draw.
I don't know how exactly to test the inverter itself. Is it... -
I have a tripp-lite aspint 3636vr inverter charger which blow some of mosfet transistors. I replaced them repaired also the driver circuit and tested but the mosfets burn again.
It work very well as inverter and also as charger if I let the rear switch in auto mode (inverter) and charger only(charging) but in auto when I connect the feed line 220V AC first time it pass ok to line and start charging the batteries but when I remove the feed line it pass to inverter mode and if I do it again the second time when passing from charging to inverter the Main transformer start making a...03-06-2023, 07:07 AM -
For some reason I'm just not going to let this 19" TV defeat me. I guess because I have a schematic to work from I feel like I'm oh so close.
History- while adding a turn-on circuit I let a small screw roll under the power board. Worked through all of that circuitry, probably replacing a MOSFET and PWM controller that were not bad but I was following the service manual. Finally figured out that the power supply is in working order when the inverter section (for the backlights) is disconnected. When the +12 supply to the inverter is disconnected the +12 and +5 will come up... -
I am currently on a troubleshoot of 46” Sony KDL-46BX450 tv. I came back from Washington to Texas on medical emergency and had to leave all my tools up there. All I have is a couple of screwdrivers and a dvm. I wish to ask the community a troubleshooting question. Please forgive stupid questions as meds I am taking produce brain fog.
I have well maintained Sony KDL-46BX450. It went black one day. After turn-on, I get solid green light and Sony logo in screen center for about 1-2 seconds, then black. No blinking LEDs, no hissing. Flashlight test shows screen characters dimly viewable,...
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