sharp model: 14v-l70m no power

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sharp model: 14v-l70m no power

Post by mannydioneda on Thu Dec 15, 2016 10:04 am

Good morning mga Master, pa help ulit.  Sharp CRT TV, Model: 14v-l70m, no power po.

details:
AN7523 - Audio IC
TDA9387PS/N3/3/1532 - Jungle IC
STRG5653 - Power Regulator
AN5522 - Vertical IC
D2627 - Horizontal Out

sabi ng may-ari walang power, nung i plug ko nag power pero walang sound, tapos kinabukasan wala naring power. 

Ang nagawa ko na.

1. nagresolder
2. nag voltage check: sa regulator - 329 vdc ang drain, sa source no voltage, sa VIN (Power supply Terminal) - 12 vdc, sa feedback no volts.  Sa main capacitor - 330 vdc, sa HOT walang voltage sa Collector. Wala din sa dalawang 160v na ecaps.

Ano sa tingin nyo mga Master sira na ang power regulator?  Pa help naman at advance thanks sa lahat at merry xmas!
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Re: sharp model: 14v-l70m no power

Post by ultrasonic™ on Thu Dec 15, 2016 1:05 pm

buo ba ang secondary caps sis.. 2pcs 100uf/160V ? 
sa status ng unit mo.. wala kang oscillation kaya hindi pa abot ang Collector supply ng H-out... check rin ang standby 5V mo

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Re: sharp model: 14v-l70m no power

Post by ultrasonic™ on Thu Dec 15, 2016 1:13 pm

my mistake sori... akala ko chassis L2 hehehehe... tumatanda na nga ako  ^_^ 

on topic: try mo muna disable ang Protect sis.. hinang/float ang pin8 ng IX3564CE.. then observe... pag nag oscillate at hindi namatay ay focus on ABL

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Re: sharp model: 14v-l70m no power

Post by mannydioneda on Thu Dec 15, 2016 3:59 pm

salamat Master Ultra, gawin ko advice mo at i update kayo pagtapos. Thanks.
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Re: sharp model: 14v-l70m no power

Post by mannydioneda on Thu Dec 15, 2016 4:26 pm

Ginawa ko na Master hinang ko pin 8 ng IX3564CE wala parin power.
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Re: sharp model: 14v-l70m no power

Post by arkin on Sat Dec 17, 2016 7:51 pm

@ts;tingin ko sira yong regulator nyan.pro chek mo muna resistor at ecaps bago mgplit ng ic.try mo rin hang yong b+.
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Re: sharp model: 14v-l70m no power

Post by mannydioneda on Sun Dec 18, 2016 3:00 pm

salamat master arkin.
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Re: sharp model: 14v-l70m no power

Post by ultrasonic™ on Mon Dec 19, 2016 2:31 pm

hmmpp mukhang may tama siguro sa Power supply mo.. monitor mo sis ang mga output derived voltages.. try din double check si Vert ic at try ihinang si D754 malapit sa gitnang butas ng board

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Re: sharp model: 14v-l70m no power

Post by mannydioneda on Tue Dec 27, 2016 1:30 pm

Thanks mga master sa tulong niyo at belated merry xmas sa inyong lahat. Solved na problem nito, sira yung regulator IC at pati yung Audio IC. Thanks ulit.
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Re: sharp model: 14v-l70m no power

Post by Electro on Thu Dec 29, 2016 8:49 pm

Congrats Master Manny, regulator pala at sound ic
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Re: sharp model: 14v-l70m no power

Post by Electro on Thu Dec 29, 2016 8:51 pm

Belated mga masters
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Re: sharp model: 14v-l70m no power

Post by alvinquimbo on Tue Jan 03, 2017 2:38 pm

congrats sis...Happy new year... Very Happy Very Happy Very Happy
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Re: sharp model: 14v-l70m no power

Post by ultrasonic™ on Wed Jan 04, 2017 6:28 pm

Ayon Good.. Reg nga... belated din sa lahat ^_^

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