Anyone have a schematic for an SAE R-102 receiver? i have one that someone mucked up the tuner section and a couple resistors burned, transistors shorted that dont look like the right ones, etc....
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Spoiler alert: I am a total noob at this, just getting into the hobby
My buddy has an audio receiver that stopped worked, everything turns on and functions but no sound comes out of any output (Speaker, AV, or Headphone) So I said I would take a look at it. I popped the cover off, and saw an obvious issue: One of the resistors on the board had burned up.
Photos:
- Burned Resistor on the board - https://i.imgur.com/Hc8AUYo.jpg
- Burned section of the board after I removed the resistor - https://i.imgur.com/I0KOXMl.jpg
- The resistor itself after I took it
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Hi to all forum members,
Got this faulty 350 watt atx psu dirt cheap from a local online seller as i am keen to use it as a learning tool to repair faulty power supply.
The faulty part is quite obvious from the burn area near the 16pin KA7500 BD pwm. The fuse is still intact with good continuity.
Upon power on ac, there is 5vdc standby power on cathode of diode D14 and about 10vdc on cathode of diode D13.(This should be the aux power to generate the 12v and 5v rail.)
Initially i replace the two burned resistors near my marked red arrow to 200 ohm resistor... -
I can hear Fred Sanford now...."YOU BIG DUMMY".....I pulled the "F" connector out of the tuner by accident. The tuner number is BN40-00248B. Low and behold I had a scrap board with tuner number BN40-00248A. Although the tuner is different (according to Encompass.com) it's footprint on the board is exactly the same as the 248B so I decided to de-solder the tuner off the scrap board to see what I was getting in to.
As you can see in the picture the terminals and solder pads are super small. No matter what I tried I could not get either the terminals or support... -
For this Dick Smith TV GE6878 (Thompson) I replaced the broken remote with a universal it kinda works though if its more than a few meters away sometimes the buttons register and sometimes they wont so I bought another remote from another brand and it has the same problem, I've had an old TV in the past that the sensor died completely and I replaced it to fix it could this be a similar problem? I tried looking for a service manual, spare parts for a receiver and a parts list but I couldnt find any info. can someone please help me to find the info online for a service manual or where I can buy... -
Everyone -- I am trying to troubleshoot my NAD C740 stereo receiver, which either won't power on or won't consistently stay powered on.
I will start by saying that I am a hobbyist, and while I am decently handy with basic DC stuff, I am more hesitant when it comes to mains-powered equipment (that is, reluctant to poke around with a multimeter when it is powered on)
The central issue is that after a long period of non-use, the receiver powers on and all functions seem to behave normally, but after a couple of minutes, it powers itself off.
If I attempt...
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