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#488739 - 20th Mar 2011 2:11pm Printed Circuit Boards, repairs.
history Offline
Enthusiast

Registered: 1st Dec 2008
Posts: 103
Loc: Birkenhead
Hi People,
I have two PSU circuit boards out of 43" plasmas that need fixing, one has a blown resistor and cannot see any other damage so that would be a simple replace and solder job, (never soldered and dont have a soldering iron).
The second board seems to be okay but there is no power going into it (checked fuse and some basic digital multimeter testing) and cannot find any probs with it.
So the question is ...Does anyone know how to fix/test these boards please.
Thanks for looking.
Cheers

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#488740 - 20th Mar 2011 2:14pm Re: Printed Circuit Boards, repairs. [Re: history]
Colski Offline
Newbeee

Registered: 13th Feb 2011
Posts: 21
Loc: Burton
190 degrees c 4 minutes in the oven
smile

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#488749 - 20th Mar 2011 2:42pm Re: Printed Circuit Boards, repairs. [Re: history]
kimpri Offline

Forum Guardian

Registered: 29th Oct 2008
Posts: 3553
Loc: birkenhead
I can lend you a soldering iron.
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#488751 - 20th Mar 2011 2:46pm Re: Printed Circuit Boards, repairs. [Re: history]
Sanchez Offline

Wiki Veteran

Registered: 17th Dec 2003
Posts: 8019
Loc: my house
More than Likley something has caused the resister to blow, if you simply replace it it could blow again..

do you have any schematics for the model you are trying to fix..

You will need to go over the circuit in question with a multimeter and find out whats caused it to blow...

I know it was pretty har do to this on older televisions, never mind new plasmas, Do you have any knowledge of this kind of thing?


Edited by Sanchez (20th Mar 2011 2:46pm)
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Uncertainty or not knowing causes depression, Im happy because I know I'm going to die one day!

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#488752 - 20th Mar 2011 2:49pm Re: Printed Circuit Boards, repairs. [Re: kimpri]
history Offline
Enthusiast

Registered: 1st Dec 2008
Posts: 103
Loc: Birkenhead
Thanks, But soldering is not for me, to miniscule.

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#488754 - 20th Mar 2011 2:59pm Re: Printed Circuit Boards, repairs. [Re: Sanchez]
history Offline
Enthusiast

Registered: 1st Dec 2008
Posts: 103
Loc: Birkenhead
Hi Sanchez,
It is a Pioneer PDP 433mxe plasma and is renouned for it's psu's going 'POP'. Was given one with blown psu and eventually got another one with busted screen, swapped psu's and it worked fine for 6 months or so and that power board has now packed up (just switched it on as normal).
I also have a spare board that has no power going to it. So 3 boards, 2 blown and 1 dead. (PCB2310 OR AXY1059) They can be bought for around £130 but i aint got that cash. Not much in experience but have the boards out. and dont have schematics.
Cheers Mike

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#488859 - 20th Mar 2011 7:31pm Re: Printed Circuit Boards, repairs. [Re: history]
Sanchez Offline

Wiki Veteran

Registered: 17th Dec 2003
Posts: 8019
Loc: my house
Tbh mike, Just keep your eyes peeled on the bay and try and get a second hander, you might damage it tring to fix it...

Annoying I know but its worth the wait..
_________________________
Uncertainty or not knowing causes depression, Im happy because I know I'm going to die one day!

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#488866 - 20th Mar 2011 7:44pm Re: Printed Circuit Boards, repairs. [Re: Sanchez]
diggingdeeper Offline

Wiki Master

Registered: 9th Jul 2008
Posts: 10810
Loc: Birkenhead
Originally Posted By: Sanchez
Tbh mike, Just keep your eyes peeled on the bay and try and get a second hander, you might damage it tring to fix it...

Annoying I know but its worth the wait..
I was thinking the same. Some power supplies won't work properly without connecting it to the screen - if you use a dodgy supply there is always the risk that if the output voltage is high or fluctuating it could blow the rest of the TV.
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In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#488892 - 20th Mar 2011 8:20pm Re: Printed Circuit Boards, repairs. [Re: diggingdeeper]
Sanchez Offline

Wiki Veteran

Registered: 17th Dec 2003
Posts: 8019
Loc: my house
Originally Posted By: diggingdeeper
Originally Posted By: Sanchez
Tbh mike, Just keep your eyes peeled on the bay and try and get a second hander, you might damage it tring to fix it...

Annoying I know but its worth the wait..
I was thinking the same. Some power supplies won't work properly without connecting it to the screen - if you use a dodgy supply there is always the risk that if the output voltage is high or fluctuating it could blow the rest of the TV.


Agreed!
_________________________
Uncertainty or not knowing causes depression, Im happy because I know I'm going to die one day!

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#489244 - 21st Mar 2011 5:24pm Re: Printed Circuit Boards, repairs. [Re: Sanchez]
history Offline
Enthusiast

Registered: 1st Dec 2008
Posts: 103
Loc: Birkenhead
Okay peeps, THANKYOU for your time and input, much appreciated.
But will take them to a firm in Liverpool called OHM SUPPLIES, looking at their site it looks like they might save the day with these boards. Will let u know how i get on.
Again thanks.
Mike

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#489296 - 21st Mar 2011 6:27pm Re: Printed Circuit Boards, repairs. [Re: history]
diggingdeeper Offline

Wiki Master

Registered: 9th Jul 2008
Posts: 10810
Loc: Birkenhead
Good find - they've moved up in the world from when I last noticed them thumbsup
_________________________
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#490034 - 22nd Mar 2011 9:35pm Re: Printed Circuit Boards, repairs. [Re: history]
history Offline
Enthusiast

Registered: 1st Dec 2008
Posts: 103
Loc: Birkenhead
Hiya Peeps, Went to OHM and the 2 blown boards not worth repairing due to the fact that what caused them to blow could happen again, the dead one they might be able to do something with it BUT that would cost £50 + VAT but no gaurantees, for that sort of money i might aswell buy a new one which i cant afford.
So will have to wait and keep looking on the bay.
Thanks again Guys.

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#505090 - 19th Apr 2011 5:50pm Re: Printed Circuit Boards, repairs. [Re: history]
Digital_twiddler Offline
Newbeee

Registered: 19th Apr 2011
Posts: 23
Loc: Bebington
@History. What make and model tv are the boards out of as I have a few boards or I could look at them for you?

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#506218 - 21st Apr 2011 4:19pm Re: Printed Circuit Boards, repairs. [Re: Digital_twiddler]
history Offline
Enthusiast

Registered: 1st Dec 2008
Posts: 103
Loc: Birkenhead
Hi, The monitor is PIONEER 433MXE PDP and i am after a power supply board which has two sets of numbers on AXY1059 or PCB2310.
Thanks M

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#506967 - 23rd Apr 2011 2:02pm Re: Printed Circuit Boards, repairs. [Re: history]
Digital_twiddler Offline
Newbeee

Registered: 19th Apr 2011
Posts: 23
Loc: Bebington
Sorry History! I've had a good look and don't have any of those boards. Did you check all the electrolytic type caps? are you ok doing this/have the equipment? What about other components on these boards, any burn marks, dry joints etc?

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