[TechAssist] Re: PRIMA mod#XT2079-WIERD FIX?????
- From: peggs <peggs@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx, <techassist@xxxxxxxxxxxxx>
- Date: Mon, 23 May 2005 08:13:54 -0700
proper polarity of C511 ??????
Peggs
At 02:25 PM 5/20/05, Don Hartigan wrote:
>Customer dropped this unit off.Said no power on.Plugged it in on test
>bench &heard a loud bang & smoke.Removed the cover & found a cap in the
>SMPS,location # C511 destroyed.Schematic says it's a 47ufd@50v .I removed
>the remains of C511.Before installing a new cap I checked the other
>components in the SMPS & all aok,as was the HOT & accosiated ccts.I
>powered the unit ''ON'' & have normal operation,ie good audio & video.This
>is with C511 out of cct.I measured 22.5 vdc across the solder pads of
>C511& 80.25vpp with the scope.I though the orginal cap was under rated for
>this cct,so I installed a 47ufd@100vdc .Now the set will not power on???I
>reinstalled the exact value as the orginal,47ufd@50vdc;still no power on.I
>removed the C511 cap & all is aok????I'm stumped!! BTW if you have any of
>these units gathering dust in your shop ,I suggest removing this cap for a
>''no power on problem''.It may be a FIX.....Anyone having an input,I'm all
>ears...........TIA.........regards.........
>Don of HARTS-TVCR"ASC"
>9 Robert St.,Oromocto,NB,Canada,E2V3N2
>Tel#506-357-9785,Fax#506-357-6010
>hartstv@xxxxxxxxxxx
>-----------------------------------------------------------------------------
>This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
>Lost Password: http://www.tech-assist.org and select "Login Problems?".
>Appliance Repair List: http://www.tech-assist.org/secure/tip/chatjoin.htm#app
>Email Archives: //www.freelists.org/archives/techassist/
-----------------------------------------------------------------------------
This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
Lost Password: http://www.tech-assist.org and select "Login Problems?".
Appliance Repair List: http://www.tech-assist.org/secure/tip/chatjoin.htm#app
Email Archives: //www.freelists.org/archives/techassist/
Other related posts:
