Re: Sony SDM-HS73 on for 2 seconds then off
1. They remove any DC offset in the output voltage.
2. Yes. Table 2 at http://wiki.xtronics.com/index.php/Capacitor_Codes shows the original were 10%; your proposed substitute are 5%.
PlainBill
-
Re: Sony SDM-HS73 on for 2 seconds then off
Couple of questions to help me learn a bit.
1) Those blue capacitors which got burned.........what are they for? From a circuit perspective........what function do they perform.
2) The marking on those caps are "27K, 3KV". Could i replace those with some "22J, 3KV"..........i dont have any 27K,3kV but i do have an old power supply board which has some 22J, 3KV.Leave a comment:
-
Re: Sony SDM-HS73 on for 2 seconds then off
Why is it unusual ???????Its Sony !!Leave a comment:
-
Re: Sony SDM-HS73 on for 2 seconds then off
retiredcaps,
Can you suggest what to measure to make sure transformers are ok?Leave a comment:
-
Re: Sony SDM-HS73 on for 2 seconds then off
Never seen a board where the inverter transformer is on the back side!
I would check the all inverter transformers to make sure they are not shorted or open. They may have caused the blue caps to blow?Leave a comment:
-
Re: Sony SDM-HS73 on for 2 seconds then off
ok....just looked at the caps again and i thought it was odd to have 3 blue caps and one black.........turns out the black cap is actually blue but has been "cooked" and turned black.
I dont think just a bad bulb could cause this could it?Leave a comment:
-
Sony SDM-HS73 on for 2 seconds then off
I have a sony SDM-HS73 which turns on for about 2 seconds and then turns off.
I opened up the monitor and found a few "burnt" caps. See enclosed pics.
Any idea what caused this?
I measured the resistance of the burnt blue cap and it measured ~ 14kohm so i think this is a bad cap.
I measured the resistance of the burnt black cap and it measured open. WHile it may be ok it probably should be replaced i know.
I did test all 4 of the bulbs and ONE of the bulbs appears to be BAD. Could a bad bulb have caused this?Attached Files -
-
I'm currently working on repairing a malfunctioning Sony TV model KD-65XE7005 with the mainboard 1-981-926-21. I would appreciate your assistance with this issue.
Upon powering on the TV, the Sony logo appears for approximately 3 seconds, after which the backlight remains lit, the screen remains black, and nothing else happens. The TV consumes around 55W initially and then drops to 35W. The indicator LED remains solid white. It doesn't respond to the remote control. When attempting to update the TV using a USB dongle, the dongle briefly flashes but nothing else happens.
...05-21-2023, 11:56 PM -
Hi community! Germany calling
I am wondering if you guys can help me out. I have an issue with my Sony LED TV. I've been told this is a good place to ask. Thanks for anyone who will reply and offer advice. Appreciated!
I have a KD-65X9005A Sony 4k LED TV. For a few weeks I've got this problem where I turn on the TV and within a few seconds the TV starts getting darker until it shuts itself off and I get the 4 blinking error code. HOWEVER there is one exception: Whenever I switch to the i-Manual, a full screen on-screen instruction manual, the TV never turns off. I tested for hours!... -
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.... -
Hi.! This Sony board turns off after 40-42 seconds.
(with adaptor/battery or both)
Don't turn on until 20 seconds,
If I disconnect Power immediately when off,than I can turn on, than again stays on same time, aprox 40 seconds
Did changed ,
thermal paste, CPU.
Flashed bios also.
fan heatsink also clean
Before turning off fan also turns on.
Any points I am missing
Thanks -
I am a hobbyist (not a professional) so please be gentle...
I recently received an XR-77A80J that wouldn't turn on. (Repeating 5 flashes when plugged in.)
I did a hard reset by holding the power button for about 30 seconds until the set powered down. I then tried to turn it on and it powered up, bringing me to the setup screen. There's not a lot of detail on the setup screen but the picture didn't have any distortions, so at least a cursory examination suggests no physical damage to the screen. The set appeared to be working normally, but it shut down after about 15 seconds,...
Leave a comment: