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Sanyo dta 150 audio system does not switch on. have checked mains fuse ok.

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Need to clean and re soldering works.Cold solder issues - each component is soldered into small holes on the printed circuit board which in turn connects said component to the other components. Due to time, heat, use, some solder joints would be cracked or loose. It is possible that the cold solder is still minimally connected (hanging by a thread). When the receiver turns on heat would be generated which would be sufficient to further loosen up the solder joint to the point it no longer provides electrical contact. Jarring the unit creates movement inside enough to re establish the contact, sometime good enough sometimes not enough.

Again, since the unit still operates (sometimes) then it is highly probable that there are no defective components. As you have surmised, it is possibly a loose connection, solder joints are "connections" except that molten soldering lead is used to attach/connect the component to the board, "loose connection" in this sense is equal to "cold solder".

Again on the assumption of no defective parts, then seeking a more experienced buddy for the soldering might be to your advantage. This is of course in addition to the possible electrical hazards when repairing....If i have helped,please click to rate.It is the only way i get paid for my work...

Hope this may help;

Regards,
VOTIT

Posted on Jul 29, 2008

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Posted on Jan 02, 2017

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Want to use my current speakers with a new surround sound system. Current system is 5.1 channels, rated at 100w per channel @ 8. Ohms. New System is rated 145watts, 5.2 channels at 6 Ohms. Will b ok?


Hi Ronald.
8 Ohm speakers will work just fine as replacements for the
6 ohm speakers. When fitting speakers you need to consider
The power handling capability. The impedance and the frequencies
involved. Power handling is expressed in wattage ie 100W.
Unfortunately this can be expressed in rms, max or peak music. The rms value (root mean square) is the only really relevant figure as this is the continuose handling power at 1 KHz. The impedance
is the resistance that the amp sees but is not a dc resistance and
varies with frequency. The lower the impedance the more power
will be drawn from the amp. In the event of a short circuit across
the speaker the amp will try to deliver infinite power into an infinitly
small load in an infinitesimal amount of time and will self destruct.
Using an 8 Ohm speaker draws less power than a 6 Ohm speaker.
Connecting speakers in parallel; results in the impedance beingreduced. For example two 8 Ohm speakers in parallel will result
in a 4 Ohm impedance load but in series will be 16 Ohms.
Incidentally the the .1 (5.1) is the sub woofer which only has
to handle the bass frequencies, a small percentage of the
amplifiers overall frequency response..
Connect your speakers and then power up the amp last
after double checking there are no shorts on the speaker
cables.
All the very best from Vintie.





Jan 07, 2017 | Audio Players & Recorders

1 Answer

Pioneer audio video receiver VSX-D710S but there is sound to the speaker, but no audio coming from the player


Try to check the audio setting of the player. If you user using optical or coaxial then the audio out put format setting should be Raw other wise it should be PCM. You will see the setting if you go through the menu of the player
.
If you wish to get some details; visit the site linked here. Pull up older posts. http://electro-medical.blogspot.com/

Jan 07, 2017 | Pioneer Audio Players & Recorders

1 Answer

Headphone jack on my phone isnt working right dont know whats wrong been having the problem for a few days dont knoww how to fix it


Take it to a cell phone repair shop locally and let them look into it, you could need to have a new main board installed.

Jan 06, 2017 | The Audio Players & Recorders

1 Answer

My Bose 321 switches it self off after 5mins . How do I stop this.


Occasionally the system may have the sleep mode activated , we have come across this before. Reset the system completely.
Any issues.
ELECTREPAIRUSA@ELECTREPAIRUSA or you can contact us at that address as we repair/renovate all items electronic and electrical old and new.

Jan 06, 2017 | Bose Audio Players & Recorders

1 Answer

Kenwood VR-357 Audio Video Surround Receiver manuals


Try Googling (kenwood)(VR-357)(manual) without parens.

Jan 02, 2017 | Kenwood VR-357

1 Answer

Switch on akai58022 tower speaker, it worked when I got it today and now it wont even switch on


what do you have it plugged-into for power ? it uses the 8-pin Apple Lightning dock connector. If you are using a USB adapter for that, then be aware that a USB-port will only let you draw 500mA or 1/2 an Amp of power....more than that will cause failures and damage to the USB port and the Hub even.

Nov 13, 2014 | Audio Players & Recorders

1 Answer

DAB radio will not work on 18v 3.0Ah battery but works on power lead. any suggestion please


I would open it up and look for a broken wire in the battery circuit, you could have a fuse in that circuit also.

Aug 30, 2014 | Audio Players & Recorders

1 Answer

How to connect speakers logitech z 5500 to the TV Samsung UN32F5500 32-Inch 1080p 60Hz Slim Smart LED


Hello there!
I have seen manuals of both the systems. You have two options to connect Logitech z5500 speakers to Samsung UN32F5500 TV.
1. With Optical Audio Cable.

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2. Stereo Ear Phone Connection.
Simply plug in Green earphone cable of Logitech Speakers to Green Audio out Jack described on Page 7 of the TV manual. If you are using stereo EP you may not experience 5.1sound separation. And it is also mentioned that you should not use other two audio cables of the tri-EP-cable provided with Logitech speakers.

Have a nice day!

Mar 12, 2014 | Audio Players & Recorders

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