Author Topic: JVC Model:AV-K14M2 Power Shutdown (Read 472 times)

Berlin C. Alcayde · « **on:** April 20, 2011, 01:58:55 PM »

Mga master help naman po sa TV na ginagawa ko. Power shutdown after oscillation ang trouble. Pag naka plug ang unit sa AC outlet ang B+ is 100V. Power on the unit ang B+ ay aangat ng 125V pero dahan- dahan na bababa sa 0V. Sabay nito ang pag bagsak ng 5V standby supply.

Actions taken

1. Vertical IC LA7840 already replace
2. Small ecaps on the power supply already replace
3. Hang B+ on flyback and turn power on e ganun din ang nangyari B+ goes high then slowly going down

Help po mga master... Thanks in advance...

Philippine Electronics Forum · « **on:** April 20, 2011, 01:58:55 PM »

taqui · « **Reply #1 on:** April 20, 2011, 02:49:36 PM »

check nyu sa feedback mga resistor bka change value,
sa primary mga resistor dn, or regulator bka my tama na.

Philippine Electronics Forum · « **Reply #1 on:** April 20, 2011, 02:49:36 PM »

danyenz · « **Reply #2 on:** April 20, 2011, 10:39:55 PM »

Quote from: Berlin C. Alcayde on April 20, 2011, 01:58:55 PM

Mga master help naman po sa TV na ginagawa ko. Power shutdown after oscillation ang trouble. Pag naka plug ang unit sa AC outlet ang B+ is 100V. Power on the unit ang B+ ay aangat ng 125V pero dahan- dahan na bababa sa 0V. Sabay nito ang pag bagsak ng 5V standby supply.

Actions taken

1. Vertical IC LA7840 already replace
2. Small ecaps on the power supply already replace
3. Hang B+ on flyback and turn power on e ganun din ang nangyari B+ goes high then slowly going down

Help po mga master... Thanks in advance...

baka may problema sa power section check mo po

Philippine Electronics Forum · « **Reply #2 on:** April 20, 2011, 10:39:55 PM »

x13r_kit_0 · « **Reply #3 on:** April 20, 2011, 10:52:16 PM »

ok na ata to sis dan..
eto po ba yung double post ts?

Philippine Electronics Forum · « **Reply #3 on:** April 20, 2011, 10:52:16 PM »

danyenz · « **Reply #4 on:** April 20, 2011, 11:04:27 PM »

Quote from: x13r_kit_0 on April 20, 2011, 10:52:16 PM

ok na ata to sis dan..
eto po ba yung double post ts?

ay oo nga double post ito solved na pala..anyway tama din sugest at analyz ko.. baka maka habol ng kape hahahaha

Philippine Electronics Forum · « **Reply #4 on:** April 20, 2011, 11:04:27 PM »

pete · « **Reply #5 on:** April 21, 2011, 05:57:03 AM »

sir paki lock na po ang thread na ito sa bandang kaliwa sa may baba may nakalagay na close press mo lang TY

danyenz · « **Reply #6 on:** April 21, 2011, 07:54:16 AM »

Quote from: peter on April 21, 2011, 05:57:03 AM

sir paki lock na po ang thread na ito sa bandang kaliwa sa may baba may nakalagay na close press mo lang TY

sori diok makita close..di pa ako marunong ..pindot ko recharge pwde .

taqui · « **Reply #7 on:** April 21, 2011, 08:28:53 AM »

TS-thread starter ang pwde mg lock ng topic sir danz.

danyenz · « **Reply #8 on:** April 21, 2011, 11:05:02 AM »

Quote from: taquinaga on April 21, 2011, 08:28:53 AM

TS-thread starter ang pwde mg lock ng topic sir danz.

ah ganun ba?sori di ko alam basa ko kasi post ni master pete..

Berlin C. Alcayde · « **Reply #9 on:** August 05, 2011, 03:39:45 PM »

OK sir salamat sa abiso di ko alam pasensya na po bago lang po ako.

Philippine Electronics Forum · « **Reply #9 on:** August 05, 2011, 03:39:45 PM »

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