Help Identifying This Capacitor?

  • Thread starter m1ke dot m477hewz at gmai
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m1ke dot m477hewz at gmai

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I'm in the process of repairing an LCD monitor, and I need to replace
two Caps on the inverter section of the power board. The problem is, I
don't know the name of this type of capacitor; the package is a yellow
plastic cube with no markings other than "72ľ2J 63" stamped on the
top. They don't seem to be polarized, and where one has melted, the
innards seem to be a single piece of solder-looking metal, no liquid
electrolyte, no mica (as far as I can tell), no paper.
Can anyone help me out here? I'm sure I can locate a source to buy some
(mouser, digikey, etc...) if only I knew what to look for. The inverter
functions intermittently even with these caps in their semi-melted
state, if that helps at all.

Thanks,
Mike Matthews
 
"m1ke dot m477hewz at gmail dot com" <m1ke.m477hewz@gmail.com> wrote in
message news:1125009908.299447.312730@g43g2000cwa.googlegroups.com...
I'm in the process of repairing an LCD monitor, and I need to replace
two Caps on the inverter section of the power board. The problem is, I
don't know the name of this type of capacitor; the package is a yellow
plastic cube with no markings other than "72ľ2J 63" stamped on the
top. They don't seem to be polarized, and where one has melted, the
innards seem to be a single piece of solder-looking metal, no liquid
electrolyte, no mica (as far as I can tell), no paper.
Can anyone help me out here? I'm sure I can locate a source to buy some
(mouser, digikey, etc...) if only I knew what to look for. The inverter
functions intermittently even with these caps in their semi-melted
state, if that helps at all.

Thanks,
Mike Matthews

The 63 is the voltage, the J is the tolerance, which IIRC is 5%, and the
first part is the capacitance, which is an extremely odd value, 72.2 uF.
I would guess that a more common value such as 68 uF would be available.
Why they should choose such an oddball value is a mystery. If it works
ok with a 68uF then no problem. If not, add a 4.7 uF to it if there's
room. Else order the exact part from the factory, but be prepared for
sticker shock.
 
On 25 Aug 2005 15:45:08 -0700, "m1ke dot m477hewz at gmail dot com"
<m1ke.m477hewz@gmail.com> put finger to keyboard and composed:

I'm in the process of repairing an LCD monitor, and I need to replace
two Caps on the inverter section of the power board. The problem is, I
don't know the name of this type of capacitor; the package is a yellow
plastic cube with no markings other than "72ľ2J 63" stamped on the
top. They don't seem to be polarized, and where one has melted, the
innards seem to be a single piece of solder-looking metal, no liquid
electrolyte, no mica (as far as I can tell), no paper.
Can anyone help me out here? I'm sure I can locate a source to buy some
(mouser, digikey, etc...) if only I knew what to look for. The inverter
functions intermittently even with these caps in their semi-melted
state, if that helps at all.

Thanks,
Mike Matthews
Click to expand...
I don't know about the "7", but the rest suggests a 2.2uF 63V
metallised film capacitor. I'm guessing the two caps are used in the
RC snubbers for the two MOSFETs ???


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.
 
Watson A.Name - "Watt Sun, the Dark Remover" wrote:
"m1ke dot m477hewz at gmail dot com" <m1ke.m477hewz@gmail.com> wrote
in message
news:1125009908.299447.312730@g43g2000cwa.googlegroups.com... I'm in
the process of repairing an LCD monitor, and I need to replace two
Caps on the inverter section of the power board. The problem is, I
don't know the name of this type of capacitor; the package is a
yellow plastic cube with no markings other than "72ľ2J 63" stamped on
the
top. They don't seem to be polarized, and where one has melted, the
innards seem to be a single piece of solder-looking metal, no liquid
electrolyte, no mica (as far as I can tell), no paper.
Can anyone help me out here? I'm sure I can locate a source to buy
some (mouser, digikey, etc...) if only I knew what to look for. The
inverter functions intermittently even with these caps in their
semi-melted state, if that helps at all.

Thanks,
Mike Matthews

The 63 is the voltage, the J is the tolerance, which IIRC is 5%, and
the first part is the capacitance, which is an extremely odd value,
72.2 uF. I would guess that a more common value such as 68 uF would
be available. Why they should choose such an oddball value is a
mystery. If it works ok with a 68uF then no problem. If not, add a
4.7 uF to it if there's room. Else order the exact part from the
factory, but be prepared for sticker shock.
Click to expand...
The 'seven' is a stranger. The value will be 2u2F (2.2uF) and probably
a polyester film type as it is non-polar.

--
Graham W http://www.gcw.org.uk/ PGM-FI page updated, Graphics Tutorial
WIMBORNE http://www.wessex-astro-society.freeserve.co.uk/ Wessex
Dorset UK Astro Society's Web pages, Info, Meeting Dates, Sites & Maps
Change 'news' to 'sewn' in my Reply address to avoid my spam filter.
 
actually, the 7 might be a slanted "T", maybe a manufacturer? (as I
said, the package is a little melted.
 
On 26 Aug 2005 16:05:57 -0700, "m1ke dot m477hewz at gmail dot com"
<m1ke.m477hewz@gmail.com> put finger to keyboard and composed:

actually, the 7 might be a slanted "T", maybe a manufacturer? (as I
said, the package is a little melted.
Click to expand...
MKT ???


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.
 
Thanks alot guys, found the exact one I needed:
http://www.mouser.com/index.cfm?handler=displayproduct&lstdispproductid=312390&e_categoryid=497&e_pcodeid=75022
Appreciate your help.

-Mike Matthews
 
scratch that, it was the wrong one. found the right one now... mouser
part # 581-BF054D0225K
 
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