Re: SONY KDL 43w805c does not accept commands
no need to buy new mainboards...
take out the heat sink of the CPU and show what we have under it
take out the heat sink of the CPU and show what we have under it
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Re: SONY KDL 43w805c does not accept commands
by the way... when it start at select language did you hear the music ? if yes you increase the volume or decrease from side panel... is there response and did you have notification bar ?Comment
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Re: SONY KDL 43w805c does not accept commands
take out the heat sink... it need heating to repair the BGA ... by removing the heat sink we can tell from which side (PIN ) on ship are responsibleComment
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Re: SONY KDL 43w805c does not accept commands
one things more before we go for heating... your photo https://www.badcaps.net/forum/attach...5&d=1610728654
the side panel and led indicator IR receiver socket... are they connected with ribbon flat cable to the middle of the mainboards?? if yes... did you inspect under loop the end silver pins of the cable if any short or broken ???? yours issue very strangeComment
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Re: SONY KDL 43w805c does not accept commands
ok then heat this chip with hot air gun specially the middle to left side facing the plug which goes to side panel
when you heat it try dont move the boards ...leave it cool then put it backLast edited by Diah; 01-15-2021, 02:40 PM.Comment
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Re: SONY KDL 43w805c does not accept commands
I did in #27
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Re: SONY KDL 43w805c does not accept commands
which heat equipment do you have ? show me to let the work being perfect this area i meanAttached FilesComment
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Re: SONY KDL 43w805c does not accept commands
Haha, no not for pipes I think i can use my one:
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Re: SONY KDL 43w805c does not accept commands
okay ... but you need first to cover all around the chip for example the glue plaster used by wall or car painting... to avoid the blow hot air fly one SMT parts near to the chip.
after that let this gun to the maximum heat ,,,let it run far from the board until it reach the high temperature if it was 350 degree, then face it to the chip area and calculate 6 second .. such 11 , 12, 13, 14, 15, 16 then leave it cool downComment
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Re: SONY KDL 43w805c does not accept commands
Done! Now i need to find my thermal paste
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Re: SONY KDL 43w805c does not accept commands
Can i try it without this heat sink just for 1min?Comment
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Re: SONY KDL 43w805c does not accept commands
Nope, it is absolutely the same
Shall i heat it again?
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I have a strange fault on a Sony amplifier. The volume control varies the display from MIN, then 1 up to 30 and then MAX as expected. At MIN there is no sound. However, at 1 it is quite loud and increasing above 1 does not change the sound level.
I have tried a Cold Reset as per the service manual.
I have looked at the I2C clock and data to volume control chip IC501 (BD3499FV). Data is only sent to IC501 when the volume is set to MIN or 1. At any other setting no data is sent to IC501.
I have looked all the way through the service manual and tried many online... -
On this Vizio D65x, the volume will change on its own. I don't mean like during commercials where the volume will increase. I mean its like the (+) volume button on the remote is pressed and the actual volume dialog is displayed on the screen going up. It will do this, then the volume may start going down. It might go all the way to "0"or it might stop at a different number, then start going back up. The whole time its doing this, the volume dialog is shown on the screen.
It wont do it until it has been "ON" for 20 or 30 minutes, so it does seem to be heat related.... -
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.... -
Has anybody had the problem of the digital clicking from the volume control coming through the speakers. I guess the mute should activate as everything seems to have a mute from the analogue switch LC7822 to prevent output of stuff on the speakers but the mute circuits are really complex. The pcb is very badly manufactured as if it is over etched and not cleaned properly before being screen printed because I have fixed one fault but a wide track lifted off real easy with very little heat requiring extra repair. I dread touching the board so would like to go straight to the problem if someone has...05-21-2023, 05:32 AM -
New to Audio equipment. Received this 7.2 Surround Sound system - had a blown channel and fixed that (0.22 ohm resistor, 2 transistors, and 1 100 ohm replaced)
All channels now work. However, when I raise the volume with knob or remote, it doesn't work smoothly - you can heard distortion, and some speakers don't seem to work at max or somewhere in between..
First thought was the actual audio switch - but then Remote volume control shouldn't have this problem, but it does.
Second thought was the ribbon cable from front display to control board (V-Flex,...
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