Re: Aiwa CA-P50, low power output
What resistor you need to replace ?? Is some 100ohm defected ?
Please try to write clearly and concretely .
If some 100 Ohm is defect, you can use normal type of resistor.
Piotr07
Member
Last Activity: 12-15-2022, 01:42 PM
Joined: 10-05-2015
Location: Szczecin
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Re: Car amplifier(Polk Audio PA660) question
How you want to run the amplifier without one final transistor, you should unsolder both final transistor to check the amp. What about the DC voltage at the power outputs ?Leave a comment:
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Re: Aiwa CA-P50, low power output
Perrete , come back to my first advice !Leave a comment:
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Re: Resistor unknown
It is 15Ohm 1/2WLeave a comment:
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Re: Aiwa CA-P50, low power output
What the Output ICs you mean?
This amp does not have any output ICs in the signal path between IN-OUT....Leave a comment:
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Re: Aiwa CA-P50, low power output
If all fusible resistors have been checked?
Thermal fuses CB1,CB2 + relay S4 are OK?
What value is the idling current and voltage on the R51(resistor on the bases of the output transistors) and next resistor on the R-chann ?Leave a comment:
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Re: Behringer UB1622fx-pro Effects pulsing on and off
It depends on the type of power supply , traditional transformer power supply does not require a low esr caps. There are 50/60Hz only.
Inverter(SMPS) power supplies works with high frequencies up to hundreds kHz - there is necessary to use low esr caps on the secondary side .Leave a comment:
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Re: pioneer vsx 2021 no sound
Here you are ! Of course, registration is necessary
[url]http://**************/load/audio/vsx_lx55/5-1-0-52442[/url]
Limits do not allow to place such a large file in the forum.Re: pioneer vsx 2021 no sound<br /> ... in the forum.Re: pioneer vsx 2021 no sound
Here you are ! Of course, registration is necessary [url]http://**************/load/audio/vsx_lx55/5-1-0-52442[/url]
Leave a comment:
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Re: Toshiba L650D schematic
Diagram of mainboard Manaus A02 for Toshiba L650D...Leave a comment:
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Harman Kardon AVR156 (similar as AVR158/AVR165/AVR1650) - no audio
Power supply circuits and power amplifier board works correctly.
No audio signals from digital board to mainboard .
The receiver AVR156 has the same design as AVR158 , AVR165, AVR1650 .
Do you know no audio problems on the mentiones series of receivers ? -
JBL ONBEAT VENUE LT does not work
There must be a problem in the mainboard. Main voltage 18V from PSU is changed to 5V and 3,3V on mainboard but the microcontroller STM32F105 does not start , all LED's are off after power on.
Do you know about some microprocessor reset function through keyboard for JBL ONBEAT VENUE LT ?
Or is it some software problem of memory loss ? -
Re: dumps for board CV3393BL-C used in many Led TV brands
You should give a type of TV which need the dump.Last edited by Piotr07; 04-03-2018, 02:49 PM.Leave a comment:
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Re: Harman Kardan AVR 141 protect mode and volume issue
Try to freeze the differential pair and you will see a change of the DC offset
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Re: LG 60PZ950S - No Sound , No Picture
Please look again at my description, I was writing that the display works OK on SelfTest Mode so the SUS boards should be OK ....Leave a comment:
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Re: Harman Kardan AVR 141 protect mode and volume issue
Typical "Protect" problem on this model is bad transistors KTC3200 - the differential pair on the Power Amplifier circuit. You must to replace to 2SC1845 of all pair as Q514/519 ,Q818/819 etc.Leave a comment:
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LG 60PZ950S - No Sound , No Picture
Story of the repair: TV had some cold solders of coils on the Z-SUS , the board has been resoldered but after mounting the board I forgot to tighten all scews . When I power on the TV, I found some overcurrent on the Z-SUS , of course it was because of my mistake. Z-SUS board has been checked and any faults, the Y-SUS ans PSU also works correctly.
The problem is on the Main , because TV wakes up from the STBY but no voltages M5/Va/Vs or Z/Y-SUS boards. The display works correctly on the AutoTest(autonomous mode) - of course, the Main is unplugged on this test. So, the PSU+YSUS/ZSUS should... -
Re: New Members - please post your introductions here
I am an electronics engineer.
I worked many years at an authorized service center , Panasonic/Technics, Sony, Philips, Sharp . I specialize in audio components but overall I repair any equipment .
Best regards for everybody !Leave a comment:
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