ترجمه انجليزي
Power suply Toshiba STRZ2152/2154
Met mlm pack? ask your tv SMPS problem thosiba who wear str Z2152 since the first br msh less and that this type of news str. total death cases but already replaced still the same problem due to the difficulty of the cr datasheet str str is I try to replace it again with the price of 75 thousand because almost all components still nrml sy check after changing new SMPS str nrml and out is the question sy jg nrml.yg jd pack bgmana how the str tsbt tegagan tuk tuk drivers ... and knowing str trsbt udh damaged by kl short fuse why not drop. ? Udh cr blogs that discuss mslh SMPS thosiba no sir thank you in advance sir.
ANSWER
I myself have never been a problem with ic news, but here I am trying to analyze it works based on the data STRZ2154 I have.
Block circuit STRZ something like ganbar below.
In contrast to the usual SMPS circuits we find the system that works using a PWM (pulse width modulation), meaning that in order to control the output voltage stable use PWM
SMPS is wearing STRZ principle works using the "resonant system". Resonant circuit consisting of the primary coil (4) (5) which diseri with capacitor C870. This means that in order to control the output voltage stable clock oscillators used changes. Feedback from photocoupler that will control the frequency of the oscillator through pin-4/5

Input voltage of 300V elko into-1 and ground pin connected through pin-12
The output of STRZ voltage pulses in the form of pin-14, and into the primary coil resonant circuit (4) (5). So that goes to the primary coil voltage 300V here not like SMPS general.
STRZ output section uses push-pull power block as shown above. Most up to 300V pin-1, was an output pin-14 and under-12 ground pin
In order oscillator STRZ start working, then the Vcc pin-8 the first time will get a voltage "start" via R860/R861.
After STRZ work, then replace the Vcc pin-8 from the repossessed tranfo switching >> D864 >> Regulators 18V Q872.
Pin-1, Over Current is detect. If the resonant coil occurs over current will cause STRZ stop working.
If you do not want to work at all:
Verify that all parts of the output voltage secondary power supply nothing short
Check voltage of 300V at pin-1
Check start voltage of 18V on Vcc pin-8. If there is no voltage start or drops, then it is likely start breaking resistor (delayed) or STRZ damaged (pin-8 short).
Check the value of the resonant capacitor C870
Check with ESR meter-elko elko at pin-6, 7, 8