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?
-
-
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
-
Re: Sanyo DP42848
Looks like 02864SN
T15695 ic
0749cAttached FilesComment
-
-
Re: Sanyo DP42848
_Comment
-
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
-
-
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
-
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
-
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
-
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
-
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
-
-
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
-
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
-
-
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
-
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... -
Hi there,
I have an Intel DX58SO motherboard that failed last year. One of the high side VRM MOSFETs failed shorted, and it killed my i7 980 CPU. This motherboard has a 6-phase VRM. The parts used on this motherboard's VRM are:
- 6 x High side MOSFET: NTMFS4841NH
- 6 x Low side MOSFET: NTMFS4834N
- 6 x Driver: ADP3121JCPZ
It was easy to figure out where the short was, because the bad MOSFET's gate was shorted to the drain/source too. Once I removed it, all the shorts were gone on the motherboard, and I confirmed on the removed MOSFET itself that the gate/drain/source... -
.. swapped mobos and matched them close as possible .. now this .. two images side by side I am guessing wrong resolution .. everything else is working fine
.. unable to get into service mode with new update any help is appreciated
https://imgur.com/a/Mzhz0Iw
https://imgur.com/a/fxB7wV807-11-2023, 10:54 PM -
[B]Background[/B]
I recently fixed our Samsung black screen of death by watching YouTube videos and reading through previous threads. Removed a few ceramic capacitors and fixed a short on the back side of the tcon board. So my father and law asked me if I could try to fix his visio. He said that it wouldn't power on. When he first brought it to me I plugged it in and there was a standby light. When I hit the power button the TV booted up and everything worked. I hit the power button again and then I saw what he ment. Since then I have not been able to get it to power on or have a standby... -
Hey all
I've been working on a 1984 Sanyo 27" color TV which had a smattering of bad caps in the video switching circuit. I found this oddball little 1uF 25V cap which looks to me like an early polymer, but I can't find concrete info proving it. I know Sanyo was a big player in early polymer cap development and this is the time period where they were just getting on the market, so I'm wondering if anyone has crusty old datasheets that could help identify it and determine if my suspicions are right? It has the same epoxy end seal and font/formatting as some old stock Os-Cons I've got laying...
Comment