Hp 2035 monitor Check the Signal Cable

[pharaon]

of-course i tried it on different computers with different cables and still the same issue which made me believe it's a hardware issue in the monitor it self
i uploaded some pictures , hope any one can help me fix it
what should i check first






[MOD note - deleted excess photo double-ups]

 

[Bluejets]

Much better to describe the fault instead of what you think is what needs fixing.

 

[pharaon]

Much better to describe the fault instead of what you think is what needs fixing.

the fault is that it always show me no single, cable changed, PC changed, made sure the socket connector is fine
what else to check to fix that error

 

[Bluejets]

the fault is that it always show me no single

and how does this come about..?

 

[pharaon]

and how does this come about..?

it show message on the monitor screen

 

[Bluejets]

Have you traced all the cabling to the board for any breaks..?

 

[Martaine2005]

The FBI must feel like this when trying to get information from a suspect!.

In the mean time, does it have any indication of power?, back light?LED?, noise?.

Have you checked the fuses on the board and in the plug (if it has one)?.

Martin

 

[bertus]

Hello,

Does the monitor have more inputs?
It seems to have the following inputs : Composite, DVI-I, S-Video, VGA (D-Sub).
Then try an other input and see if that is working.

Bertus

 

[pharaon]

Have you traced all the cabling to the board for any breaks..?

first thing i did and all was good

In the mean time, does it have any indication of power?, back light?LED?, noise?.

the screen turn on and show on the screen that Error message then go to sleep mode

Have you checked the fuses on the board and in the plug (if it has one)?.

tow on the power circuit and they are fine

It seems to have the following inputs : Composite, DVI-I, S-Video, VGA (D-Sub).
Then try an other input and see if that is working.

will try that

 

[pharaon]

Then try an other input and see if that is working.

i did and still the same, the monitor keep black for couple of seconds and on screen message " monitor will sleep" then goes black again as just before it start displaying picture but it remain black for couple of seconds the the message of sleeping again and that keep going

 

[Bluejets]

So what happened to "no signal" message..?

 

[pharaon]

So what happened to "no signal" message..?

doesn't appear but instead the monitor doesn't show any picture and goes sleep

 

[pharaon]

so any clue?

 

[Martaine2005]

It seems to have power or at least standby power.
I would check all inter-connect cables to both boards. Unplug and reseat. Check for cracked or dry solder joints. Check those cables for continuity too.
Your photos are too fuzzy to enlarge.
Can you see a connector that may have voltages written on the silk screen?. If so, check those voltages.

Martin

 

[pharaon]

I would check all inter-connect cables to both boards. Unplug and reseat. Check for cracked or dry solder joints. Check those cables for continuity too

i'll do that

Your photos are too fuzzy to enlarge

will try to get better one

Can you see a connector that may have voltages written on the silk screen?. If so, check those voltages.

what is silk screen?

 

[Martaine2005]

On the PCB, there are reference designators. R32, C14, F2 etc. Not necessarily the numbers I wrote.
Any lettering, numbering or symbols are silk screeen printed onto the PCB.
You might have a connector with eg: 5V+, 12V+, 28V+, 0V.
They are voltages on those connections and therefore those rails.

Martin

 

[pharaon]

I would check all inter-connect cables to both boards. Unplug and reseat. Check for cracked or dry solder joints. Check those cables for continuity too.

checked and all seems ok

Can you see a connector that may have voltages written on the silk screen?. If so, check those voltages.

there's none

Your photos are too fuzzy to enlarge

got new set of photos with decent resolution ,you can click on the image to open it in it's normal size

 

[(*steve*)]

1. How old is this unit?

2. Have you had it from new?

3. When did it start exhibiting this fault?

4. Did the fault suddenly appear, or did you have increasing difficulty with the monitor before it finally failed?

 

[pharaon]

How old is this unit?

i included the model in the title

Have you had it from new?

it's not mine i'm trying to fix it for friend

Did the fault suddenly appear, or did you have increasing difficulty with the monitor before it finally failed?

as what i understand from him it was suddenly appear

 

[(*steve*)]

I have seen similar problems caused by power supply issues in monitors. However these faults often develop over time. They are also faults that tend to occur in older equipment, or equipment that has been continuously powered on for years.

I would be checking the ESR of the capacitors in the power supply. I've taken a look at your photos and none of the capacitors look stereotypically faulty.