Admiral TV model without image with sound
Not even the OSD looks on the screen ???? ... you only have sound ?????
... which one is chassis
Look I am if the diagram, but look for the diagram and do this
Check on the IC Micro pins the input of the synchronization signals: VD (V-SYNC) and HD (H-SYNC) used to position the OSD characters on the TV screen ..... you have to have some the open or grounded elwmento .... you didn't give me the voltage on pin 55
hello willyboy1420 sorry for the delay I have on pin 55 4v in the tuner I have in AGC 3vol in IF 0v where it says 33v there is 23v where it says 5v there is 3v in SDA I have 3v and in CCL 3V
First tell me how much is in C811 is 10uf / 100V you must have 45V, if it is the chassis that I am seeing ..... but change C102 if it has it and D101 is a 33V zener
Tiens the low voltages in both the tuner and pin 55 here there should be 5V since they leave the I401 regulator ... but it is already in you to go up the voltages or look for which component is lowering it ... already that you are in front of the tv
I have in this chassis a c102 that is 1uf 50v and I have a zene now I measure and comment
thanks for your advice and for being there on the other side thanks for your borrowed time I will continue to fight and I comment sorry I fixed a hug in the distance I do not close the poss then I continue
You have all the voltages at each point ... the + B is 120V and the others are there ... if they are low change capacitor or diodes or check if there is any defective element
I'm guiding you with the JYM-560 diagram ..... IF it is your diagram tell me ????? ..... you speak that it has 2V and 4V in pin 8 of the eprom ..... there must be 5V approximately both in standby and on ... according to diagram C821 and C809 there must be approximately 12V ... otherwise there must be changed ... measure R701 = 120ohms .... if that's okay I suggest changing C708 and D810 to that the 5V of pin 8 of the eprom are present in both stanby and on ... if even then the voltage does not rise, it changes C523 and measures that the coil L501 is not open.
You changed C811 .... to see if it goes up to 45V .... in C804 you have + B = 120V ?? ... first normalize the 5V of pin 8 of the eprom to see if at least the voltages are normalized and t appears the OSD
Hello willyboy1420, milperdon for the delay I wanted to comment that change the c811 filter was in 5uf I also changed a filter c821 of 1000uf 16v also devalued, as well as filter of + b 100uf 160v.change the c102 and the zener d101, so I was recovering voltage , having leg 8 of the eepron 5v 118v in + b recovering tuner voltages and the TV I recover imajen, ready to deliver to the client. , thanks willyboy1420 and also to those who participated in it.I close the tem
I am glad ..... go writing down the faults with their chassis in a notebook so that you gradually become an expert ..... I am not an engineer but I have learned empirically and taking note
hello colleague the vertical has a 78041 and if it is ok, increase the sceen of the flayback and nothing is as if it had no brightness (luminance) touch the menu button, chanel, volume can not see the letter of change of channels or volume nothing for the doubts would you have the luminance circuit or better the diagram? thanks for being there
Hi, I can't send the diagram, but look for it on Google, you can find it here on this page for example http://www.tecnicosaurios.com/foro/viewtopic.php?f=3&t=14767, on the other hand, check the eeprom? . Cheers
if you check the eeprom without pressing on it has 2v when pressing it has 4v on pin 8 and I thank you for the diagram a hug
