Hello as you can see this is my first post and like many it is asking for help. I have an Insignia/Dynex NS-L46Q120-10A with a bad capacitor on the power board. I have found the bad capacitor and it is marked PS474K. I understand it to be a .47uf capacitor with 10% tolerance but I don't know the voltage and it is not listed on the capacitor. It is marked c400 on the board next to the capacitor. I cannot find schematics for this board anywhere on the web. Thanks for any help you can give me.
-
-
Re: Help with Insignia/Dynex NS-L46Q120-10A
Can we see a picture of the capacitor in question?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. -
Re: Help with Insignia/Dynex NS-L46Q120-10A
Here you go....Attached FilesComment
-
-
Re: Help with Insignia/Dynex NS-L46Q120-10A
What lettering is there on the capacitor? Can you type it all up for us to help decode.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: Help with Insignia/Dynex NS-L46Q120-10A
One more...
PS474K
2H- J3Attached FilesLast edited by landyboy; 04-21-2013, 05:42 PM.Comment
-
-
Re: Help with Insignia/Dynex NS-L46Q120-10A
Good one. Ya got me...
If I were to make an estimation (more likely to be too high than too low...) The capacitor there couples the drive into the inverter transformers. Given that the PSU probably uses active PFC, it operates on around 400V. Therefore, the capacitor should be rated to a minimum of 400V. I would say 630V, 800V or 1kV would be fine: higher is better.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: Help with Insignia/Dynex NS-L46Q120-10A
I agree with Tom, I would use 630V or higher.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
-
Re: Help with Insignia/Dynex NS-L46Q120-10A
Thanks for taking the time to help me out. I am looking at capacitors online and the ones over 400v are larger in dimension. The current one is approx 16mm with lead width of 15mm. Most of the 630v+ are 26mm width.Comment
-
Re: Help with Insignia/Dynex NS-L46Q120-10A
Is that too big to fit into the board?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
-
Re: Help with Insignia/Dynex NS-L46Q120-10A
http://www.digikey.com/product-detai...2268-ND/656426
http://www.digikey.com/product-detai...2249-ND/656407
Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
-
Re: Help with Insignia/Dynex NS-L46Q120-10A
It would fit on the board, I guess I could bend the leads to fit the seat width.Comment
-
Re: Help with Insignia/Dynex NS-L46Q120-10A
See post 10 for smaller one.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
-
Re: Help with Insignia/Dynex NS-L46Q120-10A
Thanks its ordered.Comment
-
Re: Help with Insignia/Dynex NS-L46Q120-10A
Got the capacitor the other day replaced it and now the TV works great! Thanks for all the help!Comment
-
Re: Help with Insignia/Dynex NS-L46Q120-10A
What was the original problem with the TV?Comment
-
Re: Help with Insignia/Dynex NS-L46Q120-10A
Thanks for this thread + solution. Just saved me some time!!!Comment
-
Re: Help with Insignia/Dynex NS-L46Q120-10A
Issue confirmed with this model of TV. I just replaced the same cap. Thank you all!Comment
-
Re: Help with Insignia/Dynex NS-L46Q120-10A
This issue is confirmed with my Insignia NS-L46Q120-10A as well. Replaced the capacitor and it fired right up. Thanks for all the great information.
FYI. Determining this capacitor was bad was as easy as measuring the voltages going into the LCD inverter board. If everything else is functioning properly on this TV and you are getting all the correct voltages, then this cap is likely the issue.Comment
-
Hi people, I hope this is the correct spot to post this, I'm new to the forum.
I have an RTX 3080 Founders Edition which has a burnt up capacitor (it was in parallel with another capacitor which appears damaged too), so I am hoping to be able to identify the capacitor values and order replacements.
I hope these photos make it clear which component I am referring to:
(yes, the soldering is a bit botched from removing the blown one, I know)
I have found the board schematic (attached), but there does not seem to be a boardview available. I have never... -
I replaced some capacitor which is located on optical pickup pcb which is shown in the table below(PCB #2).Because it have been out of order.
Now,It works very well,But I just have found that all caps (6svpc100my and other part number as well) ,which is shown in the table below, has ultra-high ripple current spec.
It is not able to obtain any capacitor which can be a substitute for this ultra-high ripple current nichicon capacitor.
So I replaced it with samxon and rubycon's general capacitor(GP,YXA series).
I know that these capacitor will not last as long as nichicon capacitor... -
I desoldered samwha NF capacitor(50v 5.6uf) from PCB circuit of 29inch CRT TV which have symptoms of no display after I heard sound of inrush of current to TV whenever I switch on this television.
I measured ESR value of this non-polarized capacitor(samwha NF capacitor 50v 5.6uf) by means of MESR-100 ESR meter and It displayed 0.3 ohm
And When I measured its capacitance with digital multimeter and LCR-T4 Mega328 meter, It displayed 10uf from DMM and 8uf from LCR-T4 meter.
I found catalogue of samwha capacitor(samwha-catalogue_3.pdf file), which is attached to this thread,... -
When I tried to repair LG 29 inch CRT TV, I found that the ESR value of samyoung SMS capacitor(160v 2.2uf), which is very close to D1879 transistor, is 6 ohm.
Judging from above ESR Meter Table,I think It is necessary to replace this sms capacitor.So I visited local electronics shop,and I purchased 160v 2.2uf rubycon YK capacitor.
But when I browse through rubycon YK datasheet,I found that there is no ripple current rating for 160v 2.2uf specification. But On the contrary, I found 39 mA ripple current rating for 160v 2.2uf SMS capacitor.
Rubycon YK DataSheet (b... -
a few days ago I finally purchased mser-100 v2 and I tested its abillity of measuring ESR value.
I found that It shows pretty accurate ESR value for electrolytic capacitor,But When I measure polymer capacitor of dreamcast game console,I found that one third of polymer capacitor's ESR value is more than twice the value of ESR meter table.(for example, I measured one polymer capacitor of 6.3v 100uf, It showed ESR value of 7.68)
Although my dreamcast now turns 20 years old but it still works. I occasionally have played game with it.
Is this ESR value of polymer capacitor correct?...
Comment