Thanks!
I didn't even consider to measure the current.  Will do and guestimate a=20
value based on that (after an extended burn in watching it from the=20
kitchen table  ;)
I had been looking into the capacitor plague problem when I decided to=20
take a closer look, and realized that even with 24V and "enable" and=20
brightness signals OK, the PWM controller had no Vdd!
Still might replace the bulging 4.7 uF on the power supply.

And thanks for the TECH / EE distinction.

Joe W

On 10/2/2012 6:36 PM, Bob Blick wrote:
>
>
> On Tue, Oct 2, 2012, at 02:50 PM, Joe Wronski wrote:
>> I have an LCD inverter board with a SMD fuse in the line that feeds at
>> least a 78M05, not sure what else, from the +24V line.  It is solid
>> black plastic (on top) case, no metal ends visible.  It only has the
>> digits 2 0 on it.  It is about 1.5 x 3 mm.  I temporarily jumped in a 1
>> amp fuse and now a broken 37 inch TV is working.
>> So, I should order a SMD replacement.  Any idea how to cross that fuse?
>
> Without knowing the manufacturer of the fuse or any markings on the
> board, probably not. You could measure the current flowing through it to
> see if you are in the ballpark.
>
>> Does "2 0" means 2 amp?
>
> Probably. Most tiny fuses I've seen use alpha codes though:
> http://www.te.com/commerce/DocumentDelivery/DDEController?Action=3Dshowdo=
c&DocId=3DCatalog+Section%7FFUSES%7FB%7Fpdf%7FEnglish%7FENG_CS_FUSES_B.pdf
>
>> Is the list broken or just quiet today?
>
> Just quiet!
>
>> Should I find a repair forum to post such questions?
>
> Nothing wrong with trying here. I did change the tag to EE (engineering
> you can do yourself) from TECH (more science-y).
>
> Cheerful regards,
>
> Bob
>

--=20
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