Need help where Capacitor goes Hanns hw191D

[mnrdtl]

I really messed up, i removed capacitors without mapping them. I don't know where the 1 470uf 10v goes. It's a hanns G hw191D. Please help. i found a picture that shows 1000uf 10v goes in #3 and #4. i know the 470uf 25v goes in 1,2,8
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[keeney123]

Re: Need help where Capacitor goes Hanns hw191D

Does this help?

[keeney123]

Re: Need help where Capacitor goes Hanns hw191D

Here is the Service manual. Page 64 seems like they have the 470 uF caps.

[mnrdtl]

Re: Need help where Capacitor goes Hanns hw191D

Thanks, but no help. can not see the numbers on capacitors

[mnrdtl]

Re: Need help where Capacitor goes Hanns hw191D

Thanks for the service manual. I looked at it but can't find the numbers as in c848,( number 5 in my pic) c843,( number 7) etc. i'm not real good at this.

[mnrdtl]

Re: Need help where Capacitor goes Hanns hw191D

Here is the Service manual. Page 64 seems like they have the 470 uF caps.

That manual is for hw191A i have hw191D. Mybe thats why i can't find the numbers

[stj]

Re: Need help where Capacitor goes Hanns hw191D

what are the 3 caps you have left?

btw, you should have changed the 2 smaller ones too.

[mnrdtl]

Re: Need help where Capacitor goes Hanns hw191D

what are the 3 caps you have left?

btw, you should have changed the 2 smaller ones too.

I don't know where the 1 470uf 10v goes. The others i know where they go

[stj]

Re: Need help where Capacitor goes Hanns hw191D

wtf.
put the others in then - you should only have ONE place it could go.

[mnrdtl]

Re: Need help where Capacitor goes Hanns hw191D

wtf.
put the others in then - you should only have ONE place it could go.

Sorry my bad, getting frustrated and lookin at so many pages got confused. on my post picture in need number 5 and 7 cap sizes. that is where i am stuck. Thanks for your help

[stj]

Re: Need help where Capacitor goes Hanns hw191D

still not making any sense.

you have 3 caps?
and 3 spaces?

[mnrdtl]

Re: Need help where Capacitor goes Hanns hw191D

No stj there are 2 i don't know what they are. Numbers 5 and 7 on the picture. 1 of them is 470uf 10v. The other is 470uf 25v. Can i put a 25v in the 10v and be done?

[keeney123]

Re: Need help where Capacitor goes Hanns hw191D

That manual is for hw191A i have hw191D. Mybe thats why i can't find the numbers

Sorry about that I did not notice it had rev D instead of A. Unfortunately, they changed the board layout so much the boards are completely different. With the PDF file if you want to find something usually you can go to edit then down to find and put the what you are looking for in the box and hit return.

[mariushm]

Re: Need help where Capacitor goes Hanns hw191D

The output of that power supply is 5v and 12v and probably a higher voltage like 18-20v which goes upwards towards the inverter section (which produces the higher voltage for light tubs).

Flip the board and follow with your eyes or with a multimeter on continuity mode where the trace under the + lead of that capacitor goes.

It most likely goes to that 4 or 8 pin connector which plugs directly into the other board which has the processor that decodes the vga/dvi/hdmi etc inputs and generates the signal that goes in the lcd panel.

The connector linking the psu to the display board should have 5v , ground, on/off signal wire, adjust brightness wire and probably 12v and ground and maybe 3.3v and more ground wires. Maybe the role of each pin is even written on the bottom of the board somewhere.

On that other board, you may see tiny text saying what each pin of that connector does, or you may figure out based on what capacitors are connected to each of those traces
For example if there's a 10v rated capacitor on the other board on the trace that connect the trace on the power supply board, for sure it won't carry 12v, but most likely 5v or 3.3v ...and that means in that location on your power supply board you probably had the 10v rated capacitor there.

Could also check the manual again, while it's a slightly different model it may be just tiny variation between them such as yours lacking the DVI connector (vga only model).

The service manual may still have schematic for the processor board and show there what each of those 4 or 8 pins are supposed to be doing. As you learn the role of those pins, you can go backwards and follow the traces on the power supply and see which pin on the connector was connected to that number 5 or number 7 capacitor.

[mnrdtl]

Re: Need help where Capacitor goes Hanns hw191D

The output of that power supply is 5v and 12v and probably a higher voltage like 18-20v which goes upwards towards the inverter section (which produces the higher voltage for light tubs).

Flip the board and follow with your eyes or with a multimeter on continuity mode where the trace under the + lead of that capacitor goes.

It most likely goes to that 4 or 8 pin connector which plugs directly into the other board which has the processor that decodes the vga/dvi/hdmi etc inputs and generates the signal that goes in the lcd panel.

The connector linking the psu to the display board should have 5v , ground, on/off signal wire, adjust brightness wire and probably 12v and ground and maybe 3.3v and more ground wires. Maybe the role of each pin is even written on the bottom of the board somewhere
On that other board, you may see tiny text saying what each pin of that connector does, or you may figure out based on what capacitors are connected to each of those traces
For example if there's a 10v rated capacitor on the other board on the trace that connect the trace on the power supply board, for sure it won't carry 12v, but most likely 5v or 3.3v ...and that means in that location on your power supply board you probably had the 10v rated capacitor there.

Could also check the manual again, while it's a slightly different model it may be just tiny variation between them such as yours lacking the DVI connector (vga only model).

The service manual may still have schematic for the processor board and show there what each of those 4 or 8 pins are supposed to be doing. As you learn the role of those pins, you can go backwards and follow the traces on the power supply and see which pin on the connector was connected to that number 5 or number 7 capacitor.

i am kinda lost on that, but thanks for the reply. About all i know about electricity is...it hurts if you do it wrong lol.

[keeney123]

Re: Need help where Capacitor goes Hanns hw191D

This person has the same monitor as you https://www.badcaps.net/forum/showthread.php?t=54018

Also, if you give the board number we can see if we can find the layout.

[mnrdtl]

Re: Need help where Capacitor goes Hanns hw191D

This person has the same monitor as you https://www.badcaps.net/forum/showthread.php?t=54018

Also, if you give the board number we can see if we can find the layout.

Zoom in on the picture it shows a label with barcode and numbers- H11AO11201427. on the back of the board is a sticker with numbers H11AO11100554

[jiroy]

Re: Need help where Capacitor goes Hanns hw191D

If the confusion is only between the three Caps 470mf 10v and 25 volts , it's easy to locate their true places , as the drawn circles on board would be smaller for the 10 volts than the 25 volts .
Otherwise put them all 25 volts ..

[mnrdtl]

Re: Need help where Capacitor goes Hanns hw191D

jiroy, they are all the same size circles.

[budm]

Re: Need help where Capacitor goes Hanns hw191D

Since you do have 1000uf 10V in place, then the positive leg of the 1000uF caps should be connected to one end of the Inductor (Round inductor with black shrink tubing which is part of the Pi filter network), another end of the inductor should go to the pad where the 470uF 10V cap should be. Your board look to have 3 inductors for Pi filters for 3 power supplies.
Good clear straight shot pictures of the bottom side of the board will help a lot.