|
#1
|
|||
|
|||
Here it is
|
#2
|
||||
|
||||
Yup dieseljeep correct. I was going by the power supply.
I dont remember that one ! BTW your English is very good ! Ciao Zeno LFOD ! |
#3
|
|||
|
|||
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. |
#4
|
|||
|
|||
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 |
#5
|
|||
|
|||
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 |
Audiokarma |
#6
|
||||
|
||||
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 ! |
#7
|
|||
|
|||
Dear zeno,
If you agree i will send you a private message with my Email address Let me know |
#8
|
||||
|
||||
Quote:
Zeno |
#9
|
|||
|
|||
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. |
#10
|
||||
|
||||
Quote:
SG sets we refused to do so I only did a few for some VERY good customers. Even when I worked for Sony I didnt do them. Other problem is Sony would use a totally different chassis in the same model ##. Had to go by the serial ## or SCC chassis ##. IIRC on the KV1710 some had a different supply using a second SG-613. What a dog & cost $$$$$$ to fix. BTW wernt they 2SC867 ? 73 Zeno LFOD ! |
Audiokarma |
#11
|
|||
|
|||
Quote:
The term "buck converter, not insulated" is an auto-transformer, one 240 volt winding, tapped at 120 volts, as the set was designed for 100/120 volt Japanese/US mains and is being used in 230/240 volt countries. |
|
|