Re: Hannspree HF237
I looked into the cost and it came so close to the replacement cost it was not worth my time now.
Sort of waiting for a LED conversion now.
ixtlan
Member
Last Activity: 09-26-2011, 02:52 PM
Joined: 08-05-2011
Location:
-
Re: Hannspree HF237
Well I am thinking that I will replace it anyhow.
Also the CCFL's.
Any suggestions as to where to get them?Leave a comment:
-
Re: Hannspree HF237
Transformer readings:
Meter set to 20k ohms
Transformer has 4 pins on one bank and 5 on the other.
I assume the 4 pin is the primary (1-4) and the 5 pin is sec (5-10)
Primary
1-2 = 0.00
1-3 = Open
1-4 = Open
2-3 = Open
2-4 = Open
3-4 = 0.00
Any Primary to any secondary = Open
Secondary
5-6 = Open
5-7 thru 10 = 0.00
6 - 7 thru 10 = 0.00
7 -8 thru 10 = 0.00
8 -9 thru 10 = 0.00
9 -10 = 0.00
So...Leave a comment:
-
Re: Hannspree HF237
Hopefully I can get back to this and ring out the transformer today.
But I got a Dishwasher to fix today.
When it rains it pours...Leave a comment:
-
Re: Hannspree HF237
Finally got back to this.
Supplier sent me a new cap to replace the one I blindly missed.
I put it today and results are still not good.
Some details roundup here:
Initial start-up went well and got a screen and it stayed on for over 30 minutes.
So that looking good I rebooted the computer.
Screen came back on and all looked well.
So next step was power cycle the monitor.
Did not come back on but power LED was still on.
Waited for 10 minutes and screen flashed on for 2 sec and then back off.
...Leave a comment:
-
Re: Hannspree HF237
It is 85 so I will just fore-go using it.
And order one in instead.Leave a comment:
-
Re: Hannspree HF237
It is a recommended brand so I am not concerned with that so much.
Even though it did come from RS.
But can I use a non polarized cap in a polarized position?
Or if it is a polarized cap, how do I tell what is pos and neg?Leave a comment:
-
Re: Hannspree HF237
Found a cap at the local Radio Shack.
It is an axial type and not marked + or - though.
One lead was wrapped around the cap.
The only markings are 10uF 50 v the brandname nichicon and a series of B P across the body.
Is this a non polarized?
Will it matter what is pos and neg?
How do I tell and can it be used?Leave a comment:
-
Re: Hannspree HF237
I will see if I can find one local and swap it out.
Will let you know the outcome.
Little bugger slipped by me.
Goin blind I guess.
Thanks for pointing it out.Leave a comment:
-
Re: Hannspree HF237
As a matter fact no I did not.
I overlooked it completely
50v 10uF brand is Su'scon.
Is that brand a suspect one possibly?...Leave a comment:
-
Re: Hannspree HF237
Ok the flashlight explanation helps.
But I can see nothing at angle or otherwise.
Next is the Caps.
Replaced them with Panasonic, Nichicon or Rubycon I purchased as a kit from a reputable supplier who actually refereed me here for further advise.
When the LCD does turn on it is instantaneous.
No noticeable pink or otherwise.
I will need to check the inverter resistances and get back with you.
Here is a pic of the board.
I will need to disassemble again to get better ones.
I want to review the How...Leave a comment:
-
Hannspree HF237
What a forum this is.
Great info and experience abounds!
Sorry for the length of this post but I did want to provide details.
Well that said I have a problem with a Hannspree HF237 monitor.
I have replaced the caps and still seems to have an issue with 2 seconds on and blank,
Power led stays lit.
I have read about the 2 second problem and using a flashlight to see if the backlights are off.
Dont really understand how to do this to be honest.
Do I shine the FL into the screen and see if I can see the image?
Or do I need...
No activity results to display
Leave a comment: