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Sony kv1300e european 1972 color tv
Hi dear all,
I have this set with issues on power supply. There are some diodes part number unknown by me. One is sk1w50, has someone infos on it? Many thanks |
#2
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Here in attach schema
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#3
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Zener diode 51 volt 1 watt
73 Zeno LFOD ! |
#4
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Many thanks
Dear zeno if i will need some further infos I will write to you if you agree |
#5
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use this link to look up semi's
http://www.nteinc.com/semiconductors.php?a=12 I think what you are working on is in the US a PVM monitor. Yours may be close to a PVM1200, that may help you. There are many on this list with experience with them. Good Luck 73 Zeno LFOD ! |
Audiokarma |
#6
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Quote:
We had to use the 12" screen size because of our laws, but the rest of the world didn't! |
#7
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I.m writing from Italy, so forgive me for my poor english
tomorrow I will post a pic of my set |
#8
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Here it is
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#9
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Yup dieseljeep correct. I was going by the power supply.
I dont remember that one ! BTW your English is very good ! Ciao Zeno LFOD ! |
#10
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It looks identical to the KV1212 I had.
Never had a problem with the power supply, but it had bad 'lytics in the PC corrector, where it was distorting the picture on the right. The vertical lines in the picture were curving to the right. I sold it when the CRT was showing it's age. |
Audiokarma |
#11
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In my set circuit breaker S902 trips (opens) immediately
But i had no time to check components, right now I.m only in studying Service manual and schematics. I will let you know news as soon i will have |
#12
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Hi dear all,
Power supply is a buck converter not insulated. I.m not so familiar with circuit of kick start circuit used in this set In particular functions of part with d603 C603 d602 and q601 Can you help me in understanding? Thanks |
#13
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Does this set use an SCR for horz output ?
Or separate HV & sweep outputs ? Or just one transistor ? If SCR usually it shorts & blows the power supply. VERY hard to fix, either bad drive or load in the HV. If you dont find everything thats bad will blow again. Cant help with circuit, schematic too blurry. 73 Zeno LFOD ! |
#14
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Dear zeno,
If you agree i will send you a private message with my Email address Let me know |
#15
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Quote:
The circuit is a little tricky and it used selected components. You generally had to use genuine Sony replacements which were hard to get, even years ago. They generally failed when the horiz driver transformer connections needed resoldering. They also used those transistors in the power supply. |
Audiokarma |
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