Re: Sanyo DP42848
Ok got the master today replaced it and same issue? Bad cffl's?
Ok got the master today replaced it and same issue? Bad cffl's?
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Re: Sanyo DP42848
That is a possibility. What is the part # on the inverter controller IC?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Sanyo DP42848
Looks like 02864SN
T15695 ic
0749cAttached FilesComment
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Re: Sanyo DP42848
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Re: Sanyo DP42848
I have a dp42848 with the same problem. However I did notice that if I held my meter leads on the 2 wires going to the bulbs (pink and white) and powered on the tv, the picture stayed on. Looking at the back of the tv with the cover off it is the inverter on the right side. Does this mean that the inverter is bad? Is it repairable?Attached FilesComment
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Re: Sanyo DP42848
You shouldn't stick your meter across there, you have probably damaged it due to the 3000V or so between those points.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Sanyo DP42848
Don't think it damaged it or made a difference except possible showing me that it was the slave board that's bad. I measured the other one when turning the power on and during the few seconds it was one before blacking out it only went to 27V. Like I said when I hold the two leads on them and power on the TV it works fine. When removing them it goes back to what the original issue is......Inverters. Only reason I posted was to see if someone had an idea on what may be bad on the inverter at component level or a schematic so I could replace it. Probably just order the inverter kit.Comment
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Re: Sanyo DP42848
I replaced both boards and it still does the same thing. I think I will take it down to the cffl level and see if I have a bad bulb or two.Comment
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Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Sanyo DP42848
OK tore it down and it appears I have a couple bad bulbs. Going to try some from my donor sets.Attached FilesComment
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Re: Sanyo DP42848
Did you turn it on and see what bulbs look like?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Sanyo DP42848
Ok replaced the bad bulbs and this is what I have for about 2 seconds then off. Already replaced both slave and masterAttached FilesComment
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Re: Sanyo DP42848
It looks like one of your boards is still bad, or there is a loose connector between one side of the lamps and the inverter.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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I have here a Magnum IA.100 which belongs to my parents.
The unit powers on & when the relay kicks in, you get a pop from the speakers (this might sound weird but is usual behavior for this amp). However, you get nothing coming through it from any of the inputs & no pops and crackls from any of the controls.
Because of the sound from the speaker when the amp turns on I have assumed that the output section probably works but I could be wrong & I'm not sure how to test that side of things further.
What Ive done........01-01-2025, 01:26 PM -
​Hello
Laptop E15 I5 10gen
Mb nm-c421
I have a problem with the usb-c power dc.
The motherboard start only in one side of the usb-c
Replace the usb-c port 2 times same problem
With the usb-c meter, one side 20v ok, other side the usb-c meter don't come on
Try to test the pin with the Mechanic Tail insertion tester and every pin are ok ?
Can the pd controler be the fault ? Or something else maybe ?
Thx
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All left and right refers to looking from rear of TV (or looking from front with TV upside down)- TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
- Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
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Right SIDE usb.c port charges and transfers data without issue, two left side uSB c ports charge but do not receive or see data. Was liquid damaged, and repaired significantly and thought we were in the clear but appears this is the last issue that is rearing its head. I am trying to locate the RETIMER chip that communicates the DATA TX/RX but I cannot seem to find it on the schematic or maybe I am just so tired my eyes wore out lol. Any help would be great.05-29-2025, 10:35 AM
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Hi guys
I have a faulty Xilence ATX PSU here
The fault basically is I have two short circuit power transistors on the primary side of the large SMPS transformer - they are 2SC3320.
There is another smaller transistor on the primary side C3866 which tests ok
The PSU has three transformers - it looks like the 2SC3320's drive the big one and the C3866 drives one of the small ones. There is a separate PFC PCB with it's own controller and MoSFETS
There is also a short on the 3.3V output and a near short on 5V - I suspect this probably blew...
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