#Philipstv#Ac_fuse#Blows_off.How to repair Phillips ultra slim crt tv Ac fuse blows off.



PHILLIPS TV 21″ULTRA SLIM PCB
MAIN IC TDA12135PS/N3/3/MD3
EHT BSC25-01N4095K-C
VERTICAL IC LA78141
SOUND IC TDA7297
STR CQ0765RT
AC FUSE BLOWS OFF
1.Check ohms at main filter condenser two lids—low ohms.
2.Check ohms STR supply lids—low ohms.
3.Open STR supply lid.
4.Again check ohms STR supply lid——no reading—-but PCB point reading low ohms.
5.Check rectifier diodes——-short.
6.Open diodes IN5399.
7.check diodes——short.
8.Set new diodes 4×IN5399.
9.Again check ohms at main filter condenser lids——no reading.
10.Check STR supply point—–no reading.
11.Connect fuses.
12.Open burnt STR CQ0765RT.
13.Check all zener diodes of power sections.
14.Zener diode VD802——-18Vshort.
15.Set new zener diode and STR CQ0765RT.
16.power on/measure EHT supply voltage—ok.
17.Then———

15 Replies to “#Philipstv#Ac_fuse#Blows_off.How to repair Phillips ultra slim crt tv Ac fuse blows off.”

  1. m k

    Sir ekti china kit jar power supply shot remove korar por fuse open kore 100wtt bulb t series kore volt check korar por primary section ok but secondary sectione kono volt dekha6e na taar mane ki.

  2. NAZMUL HAQUE BARBHUIYA

    অনেক সময় সঠিক মানের চেয়ে সামান্য বেশি মানের zeener পাওয়া যায় তাই আমি জানতে চাই সামান্য বেশি মানের zeener লাগানো যাবে কি?

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