HP w2007 PTB-1773 - Where to start?

[budm]

Re: HP w2007 PTB-1773 - Where to start?

This is how I take it apart.
http://s807.photobucket.com/albums/y...HP/HP%20W2007/
Too many pictures to post.

[Bobhoskin]

Re: HP w2007 PTB-1773 - Where to start?

Update,
I've changed C826, C829 (1uF) and C807 (82uF to 100uF like an repairer suggest me).... at last I've change every capacitor except the 3 big in the middle (70uF 35v).
No results, dead.

I desolder one leg of every resistence on the board and test them, all have good values, some not really perfect but near.
I will like to test even the Tea1530, if I need an Oscilloscope I'm happy because I have one from long time and never know how to use it (philips pm3234).

I don't understand a thing, I have about 310volt that arrive at the transformer T802 at the 5 pins (with the optocoupler and 2 caps), on the other side there is no current at all, it's broken? or how it works?

Here I post some photos I made to the chips on the bottom .....hope it help
The 4th photo like you see there is no writes on transistor, seems melted? (it seems the same trasistor of photo 3)

......

Hi Maverick530,
I like to ask you if you have found the way to make it work?

[selldoor]

Re: HP w2007 PTB-1773 - Where to start?

Please do not post pictures in line - they can take forever to load for some members and they load whether they need to be seen or not.
Please use" Manage attachments" which is found by clicking on "Go Advanced" which is under "Quick Reply". They then show as a Thumbnail
which can be enlarged if needed.
Pic should be jpg no bigger than 2gb 2000x 2000.

[Bobhoskin]

Re: HP w2007 PTB-1773 - Where to start?

Please do not post pictures in line - they can take forever to load for some members and they load whether they need to be seen or not.
Please use" Manage attachments" which is found by clicking on "Go Advanced" which is under "Quick Reply". They then show as a Thumbnail
which can be enlarged if needed.
Pic should be jpg no bigger than 2gb 2000x 2000.

Thank you,
I can't find the way to modify it, sorry
this case the photos are not to heavy, just around 175kb each.

[electrofaz]

Re: HP w2007 PTB-1773 - Where to start?

Hi,

Just in case somebody stumbles accross this thread just as I did, I have a Iiyama ProLite B2712HDS, purchased in 2011, just stopped working, would not turn on, not even power light.
It has a very similar power supply board (also type e59670), resistors R804 (15k, 5%), R803 (0.51Ohm, 1W) had burned, I only managed to figure out their values by looking at the pictures in this thread.
The big power mosfet AP2761I-A Q803 had blown and controller EA1530A I801 which had it's drain connected to the blown resistors was also dead.

After replacing the blown parts the monitor works again.

I could not find any bad caps, the 1u 50v caps mentioned in this thread do not exist on this version of the psu board. I checked the caps not just visually but also with an ESR meter, even the ones sitting close to heatsinks are fine - besides they are not connected to the damaged components anyway. So maybe I've failed to find the origin of the problem and only cured the symtoms.

hope this may be of help to somebody,
kind regards,
Franz

[jetglobal]

Re: HP w2007 PTB-1773 - Where to start?

I have a HP w2007 20" LCD monitor that has died. No lights, no nothing. I suspect the power board since there are no lights at all, but I'm at a loss as to where to start in order to fix it since it passes my visual inspection of the caps. No caps seem bulged and the fuse shows continuity still.

Any ideas?

Attached are pictures of the front and back, and here's some identifying markings:

Back sticker:
0716P
793V8A02810 AG

6832177300P02 PTB-1773 02/06 '07

Front:
E59670

0733-5

6832177300P02
PTB-1773 02/06 '07

Front Sticker:
5073291-6430 AE
7354C403687 30716P


(D809)
MOSPEC
URF1020C
MA6G

(Q803)
KHB
700N65F
728


It looks like a similar model if not the exact same PTB-1773 is also found in HP W1907 monitors? Anyone have success in fixing these? If so, what are common problems?

I have an HP W1907. Black Screen, nothing happens. High DC voltage at big Condensor is OK, No 5 Volt. No sign of starting. Nothing unususal with optical check, no burned or blasted parts.
100kOhm OK,
I exchanged most of the most capacitors (82uF I could not get) > No success.
So I looked around for a PTB-1773 on the net and found 1 shop selling it for around 25 $ (new)


https://a.aliexpress.com/_mrN1xSH

then go direct to
https://www.aliexpress.com/item/3266...68574c4dJ8tSNC

You can check with the piture if it is exactly what you are looking for.

Hope that is helping somebody.

Joachim