Hi everyone, i am a newbie here and i hope i will find the help i need. I have the above mentioned receiver with standby transformer's primary coil damaged. I have searched the net without success to find any tech data about this transformer. I have only the Sony part number1-437-313-11 and TAM Malaysia M0126. I guess i could find replacement for it, but i need to know the secondary coil voltages and VA. It is 220v on the primary. It has 5 pins on the secondary, the outer two are not used and i have 6.5 ohms between pins 2and 4, 3,9 ohms between 2 and 3, and 3,6 ohms between 3 and 4. Can someone determine looking the schematics what voltage i need on the secondary? This transformer is mounted on a small board called AC board and the only voltage going out of it is 8v to the main cpu. Other 4 pins on the connector CN51 are ground and 3 incoming voltages, i think. There are two transistors right after the transformer and i am wondering if it is 15-0-15 or maybe something else. Any thoughts about it will be highly appreciated.
Sony STR-DB870QS standby transformer
Collapse
X
Related Topics
Collapse
-
by HounddoghillSharp TV LC-80LE633U
Power supply board DPS 285BP Run TKB096WJQZ
Standby transformer markings (attached picture)
MP-130I(01)
AV-DP11153 Delta
Dcum 1244(03) H6P
So an event in the primary exploded the cap (C7901)on pin one of the Standby circuit IC. So after replacing a couple diodes a the 2.2ohm resistor(fuse) I found the transformer inputs are open.
Anyone know about replacements for this transformer?
I suspect the original is not available.
https://www.badcaps.net/forum/images/smilies/silly.gif
... -
by androriparaHello everyone,
i am trying to repair a Sony KDL-55HX820 led TV which is throwing error code 4 (standby led flashing four times).
I followed the troubleshooting flowchart at page 69, and between pin1 and pin7 of CN6002 i am reading 1.91V so i guess i can rule out the B Board as the culprit.
Before ordering new G* Boards (by the way, should i change both? it is not specified in the manual) i wanted to try and do more advanced troubleshooting since i've read in other threads people resolving their problems on the 46/55 HX 820/823/825 models by replacing the Samsung led... -
by Carlos#2003%Buenas mi nombre es carlos me uni al foro porque estoy buscando el schematic de una sony vaio pcg-41217u otras formas de escribirlo son 1p-0117j01-a012 mbx-237 numero de placa revision 1.2 o Sony VPCSB (MBX-237), en fin me gustaria y ayudaria un monton si alguien me puede dar dichi svhematic para hacer las mediciones de una laptop de la mencionada anteriormente(Sony VAIO PCG-41217U) con el fin de repararla dejo de funcionar solo prende el led de la bateria al pulsar el boton de power el disco empiesa a hacer ruido de actividad pero los leds del frontas no reflejan acividad y no enciende la pantalla....
-
Channel: Schematic Requests ONLY!
-
-
by notallbadPower transformer has open circuit on the 230v primary side, its tapped for 115v too which is also open so most likely the thermal fuse has blown. It doesnt look like it would be possible to open it up to check the thermal fuse so looking to replace.
What are peoples thoughts on repair?
replace the one transformer with 2
replace like for like, though unlikely to find a direct replacement...-
Channel: Troubleshooting Audio Equipment
-
-
by caseyjay_48I am currently on a troubleshoot of 46” Sony KDL-46BX450 tv. I came back from Washington to Texas on medical emergency and had to leave all my tools up there. All I have is a couple of screwdrivers and a dvm. I wish to ask the community a troubleshooting question. Please forgive stupid questions as meds I am taking produce brain fog.
I have well maintained Sony KDL-46BX450. It went black one day. After turn-on, I get solid green light and Sony logo in screen center for about 1-2 seconds, then black. No blinking LEDs, no hissing. Flashlight test shows screen characters dimly viewable,... - Loading...
- No more items.