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Author Topic: Sharp tv model:20V-R70M  (Read 1052 times)

Offline bhenz

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Sharp tv model:20V-R70M
« on: May 22, 2011, 04:25:12 PM »
mga master help naman po.ano kaya possible na sira nito.normal voltage lahat pag nakastanby power lang sya pero pag on ko ng power sa remote o kaya dun sa channel button naglolow voltage na sya.yung B+ to flyback naglolow down to 70 volts.help naman pls.
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Sharp tv model:20V-R70M
« on: May 22, 2011, 04:25:12 PM »

Offline x13r_kit_0

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Re: Sharp tv model:20V-R70M
« Reply #1 on: May 22, 2011, 04:36:11 PM »
 sir natry mo na po ba hang muna ang b+ kung mgdrop pa rin po...

nu problem sa ngayun sir,no power po ba,..standby?
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Re: Sharp tv model:20V-R70M
« Reply #1 on: May 22, 2011, 04:36:11 PM »

Offline Vaounsi

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Re: Sharp tv model:20V-R70M
« Reply #2 on: May 22, 2011, 04:36:30 PM »
replace ka muna ecap secodary
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Re: Sharp tv model:20V-R70M
« Reply #2 on: May 22, 2011, 04:36:30 PM »

Offline danyenz

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Re: Sharp tv model:20V-R70M
« Reply #3 on: May 22, 2011, 04:53:18 PM »
Quote from: รว - ะว on May 22, 2011, 04:36:30 PM
replace ka muna ecap secodary
tama diba ang relay nyan switch ng b+ punta fbt? palit mo ecap jn sa 2ndary bago pumasok relay... kasi pag nag load na dina kaya ng ecap..naka gawa na jasi ako ganyan..sana ok..
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Re: Sharp tv model:20V-R70M
« Reply #3 on: May 22, 2011, 04:53:18 PM »

Offline arn-arn

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Re: Sharp tv model:20V-R70M
« Reply #4 on: May 22, 2011, 04:56:41 PM »
try mo rin hang and measure mga bias resistor near flyback baka my nag open...
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Re: Sharp tv model:20V-R70M
« Reply #4 on: May 22, 2011, 04:56:41 PM »

Offline pete

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Re: Sharp tv model:20V-R70M
« Reply #5 on: May 22, 2011, 05:00:13 PM »
check/replace 160v33uf at 160v100uf baka dyan lang...

pag ganun parin hung ang B+ pin ng FBT
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Offline bhenz

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Re: Sharp tv model:20V-R70M
« Reply #6 on: May 22, 2011, 05:32:07 PM »
mga master naitry ko na hang B+ di naman sya naglolow voltage.TIA
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Offline bhenz

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Re: Sharp tv model:20V-R70M
« Reply #7 on: May 22, 2011, 05:37:25 PM »
sir pete napalitan ko na rin mga ecaps na yan ganun pa din
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Offline Tripler02

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Re: Sharp tv model:20V-R70M
« Reply #8 on: May 22, 2011, 07:59:49 PM »
Mukhang kapos sa drive ang reg. check primary muna..
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Offline MARCIS

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Re: Sharp tv model:20V-R70M
« Reply #9 on: May 22, 2011, 08:18:03 PM »
ring test mo yung FBT sa primary baka shorted na primary ng FBT. malaking bagay pag meron kayong ringer lalo sa pag test ng chooper at yoke
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Offline enriz622

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Re: Sharp tv model:20V-R70M
« Reply #10 on: May 22, 2011, 08:36:59 PM »
ok ba hot nyan,resolder muna sa may secondary ng supply papunta sa b+ pin ng fbt. Pag d nagbago check mga parts sa horiz area o baka may problema sa load ng fbt
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Offline enriz622

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Re: Sharp tv model:20V-R70M
« Reply #11 on: May 22, 2011, 08:38:50 PM »
ok ba hot nyan,resolder muna sa may secondary ng supply papunta sa b+ pin ng fbt. Pag d nagbago check mga parts sa horiz area o baka may problema sa load ng fbt
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Offline Mr. Turko

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Re: Sharp tv model:20V-R70M
« Reply #12 on: May 22, 2011, 09:28:31 PM »
Quote from: gtsi on May 22, 2011, 04:25:12 PM
mga master help naman po.ano kaya possible na sira nito.normal voltage lahat pag nakastanby power lang sya pero pag on ko ng power sa remote o kaya dun sa channel button naglolow voltage na sya.yung B+ to flyback naglolow down to 70 volts.help naman pls.
na-check mo naba yung resistor 2.2 ohms sa primary ng psu?check mo baka open na kaya bagsak ang supply..
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Offline NORTH LUZON

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Re: Sharp tv model:20V-R70M
« Reply #13 on: May 22, 2011, 09:56:47 PM »
observe mo ung init ng hot after pagswitch mo ng several times
pag mainit agad baka may tama ang fb mo
try mo float ang yoke then sukat mo ulit ang b+ kung dropped pa
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Offline song

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Re: Sharp tv model:20V-R70M
« Reply #14 on: May 22, 2011, 10:02:17 PM »
regulator po ba nito STRW5453? if meron kayo pamalit, try to replace din,
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Offline bhenz

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Re: Sharp tv model:20V-R70M
« Reply #15 on: May 23, 2011, 05:44:16 AM »
cge try ko lahat ng advice nyo.thanks mga master.
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Offline danyenz

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Re: Sharp tv model:20V-R70M
« Reply #16 on: May 23, 2011, 07:09:53 AM »
Q601 check mo po baka may tama na, f0229 fbt isolate mo wag muna load 2ndary, except ground at abl para iwas arking..voltage reading ulit to confirm if may bara sa 2ndary lopt..pag ganun pa din 2ndary ng choper may problema or psu...
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Offline taqui

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Re: Sharp tv model:20V-R70M
« Reply #17 on: May 23, 2011, 08:01:29 AM »
anung regulator nito?

observe HOT kung umiinit? kung hndi ay psu parin yan..
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Offline J@M

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Re: Sharp tv model:20V-R70M
« Reply #18 on: May 23, 2011, 12:57:34 PM »
TS try mo lng mga advice mga master solve na yan.
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Offline bhenz

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Re: Sharp tv model:20V-R70M
« Reply #19 on: May 28, 2011, 09:29:49 PM »
mga master nasolve ko na ito nagpalit ako ng regulator at nad high resistance ang R706.salamat ng marami sa inyong lahat mga master.pogi points sa inyong lahat...
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Philippine Electronics Forum

Re: Sharp tv model:20V-R70M
« Reply #19 on: May 28, 2011, 09:29:49 PM »
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