Forum: Troubleshooting TVs and Video Sources
Yesterday, 07:55 PM
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Replies: 1
Views: 34
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Forum: Troubleshooting Game Consoles & Other Weird Devices
Yesterday, 09:28 AM
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Replies: 28
Views: 1,982
Re: Hitachi Refrigerator R-Z270AUN7KV not cold.
I don't know what the timer motor resistance will be, but it is likely fairly high, If it reads anything but open it is likely ok. You can replace it with a different duty cycle, it's not that...
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Forum: Troubleshooting Power Supplies and Power Supply Design
03-02-2021, 09:48 PM
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Replies: 12
Views: 367
Re: Delta DPS-200PB-185A Schematic
I was looking at your Scan0167, and I see you have the T351 transformer coil across the Drain and source of Q351, are you sure this is correct or could Q351 be shorted D~S? If the fet is shorted,...
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Forum: Troubleshooting Game Consoles & Other Weird Devices
03-02-2021, 06:34 PM
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Replies: 28
Views: 1,982
Re: Hitachi Refrigerator R-Z270AUN7KV not cold.
I believe the defrost timer in my fridge works like this, for every 6 hours of "compressor run time" the timer will then defrost for 25min.
The TMDFX05CD1 = for every 12H of run time it defrosts for...
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Forum: Troubleshooting Game Consoles & Other Weird Devices
03-02-2021, 10:48 AM
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Replies: 28
Views: 1,982
Re: Hitachi Refrigerator R-Z270AUN7KV not cold.
I don't know which one it is but if you look at the schematic, there are two, a thermal fuse and a defrost thermo (thermostat) , You said that when you turned the defrost timer so it would defrost...
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Forum: Troubleshooting TVs and Video Sources
03-01-2021, 12:21 PM
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Replies: 6
Views: 136
Re: LG 50ps60 Plasma Grainy/Fuzzy Horizontal
I would try re-seating the flex cables between the panel and the buffer boards, I would inspect them for damage incase the last person was not careful with them. That might clear up some of the...
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Forum: Troubleshooting Game Consoles & Other Weird Devices
03-01-2021, 11:02 AM
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Replies: 28
Views: 1,982
Re: Hitachi Refrigerator R-Z270AUN7KV not cold.
The schematic of this fridge is in post#11, You can see that the thermostat switches the a/c on and off to everything but the fridge lamp. The defrost timer only runs when the thermostat is closed,...
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Forum: Troubleshooting TVs and Video Sources
02-28-2021, 07:25 PM
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Replies: 13
Views: 343
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Forum: Troubleshooting TVs and Video Sources
02-28-2021, 07:03 PM
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Replies: 13
Views: 343
Re: Samsung LE37B530P7W 37" dead power supply
This snubber cap (CM806) is a common failure on these samsung boards, other models have the same problem, the cap shorts and the fuse opens. Sometimes the ic's output fet also shorts after the cap...
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Forum: Troubleshooting Power Supplies and Power Supply Design
02-28-2021, 06:37 PM
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Replies: 15
Views: 474
Re: 1300W PSU - Help with replacement mosfet
I suspect the 47Ω is in series between the gate and the driver, The 10kΩ is likely from the gate drive to ground and something else that is across it is causing the lower resistance. either bad...
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Forum: Troubleshooting TVs and Video Sources
02-28-2021, 06:07 PM
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Replies: 13
Views: 343
Re: Samsung LE37B530P7W 37" dead power supply
Yes CM806 disc capacitor is shorted. The ic nect to it might be bad as well ICM801, what is the number on the ic as well as the cap if it is still there on the side that is good.
The cap CM806 is...
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