R_J
Badcaps Legend
Last Activity: Yesterday, 09:04 PM
Joined: 06-28-2012
Location: ☻
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Your HDMI source could be sending an unsupported resolution to the tv, change the output on the source device to something the tv supports.... -
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I went by the schematic, and the one giveaway was pin 3 which is not used and is not connected to anything. I am not sure how alps numbers the switches, but in this receiver, this is how they are numbered. It looks like this switch has the mounting bolt between pin 1 and 12. This switch was likely custom made for KenwoodLast edited by R_J; 09-01-2025, 04:48 PM.Leave a comment:
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Can you see these numbers? the switch pin numbers count around the other side up to pin 12
...Last edited by R_J; 09-01-2025, 12:20 PM.Leave a comment:
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If you click on the pictures and make them larger you will see the pin numbers I put on them. Are you using a computer or a phone? You wanted to know the pin numbers on the switch, so I numbered them and gave their destination
I used the pictures you provided, and numbers the pins as per the service manual
Pin 6, To Board 15 (Left Output) goes to the amp board, pin 15
Pin 5 goes to Left speaker "A" + positive (Red terminal)
pin 4 goes to Left speaker "B" + positive (Red terminal)
Pin 3 is not connected (n.c.)
Pin 2 goes to Right speaker...Last edited by R_J; 09-01-2025, 10:50 AM.Leave a comment:
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The best I can make out from your pictures is the following, the numbers may be hard to see but they are there...
Last edited by R_J; 08-31-2025, 07:55 PM.Leave a comment:
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When it displays "No Model Info" do ANY of the front buttons change the display to show different model numbers?Leave a comment:
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This is for RX-V1077/RX-A1040 Firmware Update Version 1.98
Maybe this will work, it should reload the firmware from a usb drive...Leave a comment:
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It might be an optocoupler or Precision Analog Switch (as stated by one website) The ic can be ordered if you suspect it is bad.
I also found these specs but they may not be correct...Part Number 53A3P Type Precision Analog Switch Supply Voltage ±5V to ±18V (Dual Supply) or 10V to 36V (Single Supply) Last edited by R_J; 08-29-2025, 09:13 PM.Leave a comment:
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Yes, it is a Richtek RT8249CGQW...
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Post a picture of the ic, what case type? if it is used to control the unit it is likely a custom programed microprocessor ic.Last edited by R_J; 08-28-2025, 04:34 PM.Leave a comment:
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The closest image I can find is this with the similar numbers 125 003, it is listed as Ametherm Thermistor SL22-2R510, (STI: 125 003) Inrush Current Limiting
Measure the diameter of yours or provide a make and model of what it is used in...Last edited by R_J; 08-26-2025, 05:52 PM.Leave a comment:
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Could it be a RT1711HWSC...
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NB671LBGQ-Z
If pins 1 & 2 are connected together you likely have a short on the Vin to ground....Last edited by R_J; 08-24-2025, 03:56 PM.Leave a comment:
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Could be a G5029ARC1D
and looks like the 8KB is a PJX138K-AULast edited by R_J; 08-23-2025, 12:51 PM.Leave a comment:
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The ic is an SCT2450...
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I found the same post on another site, do what they said, check if you have standby voltageLast edited by R_J; 08-20-2025, 06:56 PM.Leave a comment:
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Search for: VRCT 2 Pin Euro to Angle Swivel Cord 360 Degree Swivel Plug Power Cord for Hair Flat Iron Dryer Straightener
Does this look like it?...Leave a comment:
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Might be an MPS MP26123DR or MP26124, looks like the ic might depend on how many battery cells are in the unit...
Last edited by R_J; 08-14-2025, 05:01 PM.Leave a comment:
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Likely the easiest way to run the main board would to just short across Q7 Emitter to collector, that just completes the ground circuit so the radio should be on all the time when power is applied.
the other way would be to connect a 4.7KΩ or even a higher value would work from C36 (12VDC) to Q7 Base, that would also turn on Q7 to conduct
I doubt anyone has played with the coil etc. adjustments, if they did AM would likely not work as well and FM would not just be low volume but out of tune completely. Make sure you have a good length of wire for the FM antenna, the circuit is fairly...Last edited by R_J; 08-13-2025, 04:42 PM.Leave a comment:
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