Author Topic: Panasonic TC-21S10P schematic diagram (Read 710 times)

ditchie · « **on:** January 03, 2012, 02:27:37 PM »

pa help po sana sa unit na ito kelangan ko ng schematic for troubleshooting.
major parts used:
JUNGLE AN5192NK
MICOM MN1528115ZW
REG C4804A transisitor
H-OUT D2499
error amp SE090

history: galing na sa ibang technician, sabi ng may-ari wala daw lang picture sometimes meron at blurry pero meron sound. ginalaw ng ibang technician sa main board. resolder niya micom at jungle, pero pangit ka solder cold solder mg pins. tpos ginalaw mg part near sound ic. nilagay sa copper side. meron din transistor na tinggal part number Q116 medyo malapit sa sound IC. marami pa ang ginalaw sa mainboard. pati din sa C-board.

what i've done:
inayos ko muna mga cold solder lahat ng ginawa niya resolder ko lahat at linis mode using laquer. pinalitan ko suspected ecaps sa PS section. Upon Inspection nakita ko na corroded na CRT socket so palit mode din. Before Power up , nag bulb method muna ako sa fuse. then power up. so far ok naman nagstandby ang unit. install fuse then power up standby ang unit ayaw mag.oscillate. no click heard from RELAY.
next voltage testing:
voltage at main ecap 300vdc
5VOLTS ok
b+ 10vdc only
no other voltage present.

help po...

Philippine Electronics Forum · « **on:** January 03, 2012, 02:27:37 PM »

ditchie · « **Reply #1 on:** January 03, 2012, 02:30:44 PM »

any comments would greatly help me troubleshoot. 3days ko na itong ginagawa still no luck. standby lang ang unit w/ red led on.

additional info: all transistor at PS section including REG are ok.

Philippine Electronics Forum · « **Reply #1 on:** January 03, 2012, 02:30:44 PM »

sympleguy2u™ · « **Reply #2 on:** January 03, 2012, 04:05:45 PM »

Sis, try mo ito baka makatulong

http://elektrotanya.com/panasonic_tc_2105rt_21s1_21s10_chassis_mx3.pdf/download.html

Philippine Electronics Forum · « **Reply #2 on:** January 03, 2012, 04:05:45 PM »

ditchie · « **Reply #3 on:** January 03, 2012, 05:03:20 PM »

^tnx sis. pero saan download link dun..

Philippine Electronics Forum · « **Reply #3 on:** January 03, 2012, 05:03:20 PM »

sympleguy2u™ · « **Reply #4 on:** January 03, 2012, 05:08:50 PM »

Sis, dun sa baba makikita mo Get Manual
   click mo lang yan ---> not logged in
   Only 2 Downloads
   allowed a day!

Philippine Electronics Forum · « **Reply #4 on:** January 03, 2012, 05:08:50 PM »

ditchie · « **Reply #5 on:** January 03, 2012, 05:13:12 PM »

tnx sis nag.appear na din after 30 minutes. kanina processing lang pla...

malanding points para sayo..

pete · « **Reply #6 on:** January 03, 2012, 06:35:24 PM »

replace mains filter ecap, small ecap

replace secondary 220uf200v

ditchie · « **Reply #7 on:** January 03, 2012, 06:53:41 PM »

ok master pete palitan ko bukas ecap.

RhUNhA · « **Reply #8 on:** January 03, 2012, 07:29:32 PM »

check m yung diode malapit sa tact switch...at yung mga tranie connected sa relay.check mo din yung base ng trannie trigger ng relay kung may supply nang gagaling sa syscon..

ditchie · « **Reply #9 on:** January 03, 2012, 07:39:44 PM »

i'll check that sis. sa supply na galing from syscon meron naman siya sis.

RhUNhA · « **Reply #10 on:** January 04, 2012, 07:29:19 AM »

kung may supply galing syscon yung base ng trannie trigger sa relay kapag press mo ang power button baka nmn deffective yung trannie mo ....sabi mo kasi ok nmn may supply na 5v..ilan ba ang nasusukat mo sa pin ng relay...

Philippine Electronics Forum · « **Reply #10 on:** January 04, 2012, 07:29:19 AM »

Philippine Electronics Forum