Re: Harman Kardon AVR 370
I see you ordered the transistor, But a 2SC2911 should work also.
I see you ordered the transistor, But a 2SC2911 should work also.
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Re: Harman Kardon AVR 370
Hello receiver repaired thanks for the help
Parts have been replaced:
B1647
D2560
2W 0,47 ohm
2SD600K Y TO126 NPN 100V 1A 130MHz
470pF 1KVComment
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Re: Harman Kardon AVR 370
Hello, today I have speakers and it turns out that one channel in the amplifier, the one that was damaged, plays quietly and creaks, it is SURR.LEFTComment
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Re: Harman Kardon AVR 370
You likely have more damage in the driver circuit. Take measurements and compare against SURR.RIGHT channel.Comment
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Re: Harman Kardon AVR 370
Hello, I checked all parts and they look good and the sound still creaksAttached FilesComment
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Re: Harman Kardon AVR 370
Hello, I was able to fix it but I don't know what I did, that the central speaker doesn't work, the receiver does not sound centralComment
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
A Harman/Kardon AVR 645 repair has been a hobby of mine for the past several years. My latest attempt involved the purchase of a DOA unit for part swapping and testing. The original AVR would power up then shut down after a few seconds. I completely tore down both units, found a couple of bad components and reassembled one of them. Same issue, no speakers connected. After extensive research I found a repair document from Harman/Kardon that explains the protection circuit in fantastic detail and provides specific test points for each fault (power, DC detection, overload & power) and the voltage...06-17-2024, 11:43 AM -
I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy... -
Cant find what smd code Y0DVA.
sitting in Harman kardon onyx studio 7. Appreciate any help. -
I have been working on this concept for quite some time now with limited success but recently I found a switching power supply that is setup for the voltage that this soldering station needs to operate at however it also needs part of the secondary circuit from the original switching power because you need several voltage rails
I once tried to get a ZD-915 desoldering station to work on a 18 volt battery power supply but unfortunately things did not go well but I did find a work around but I might try this idea again but going at a little differently more about this another time...
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