Comments on: RCF Active Speaker System Repaired. Model: ART 300A

By: Raymundo Saura

Raymundo Saura — Sat, 08 Feb 2014 15:32:46 +0000

thanks for sharing sir Waleed Rishmawi and sir Jestine Yong thanks and GOD bless

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By: Keith Ford

Keith Ford — Sat, 08 Feb 2014 06:23:43 +0000

great article! loved the light bulb description.

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By: Jestine Yong

Jestine Yong — Tue, 28 May 2013 01:30:19 +0000

In reply to Leung Wing Kai.

Hi Leung,

Thanks for sharing your experience.

Jestine

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By: Leung Wing Kai

Leung Wing Kai — Mon, 27 May 2013 07:51:42 +0000

In reply to Jestine Yong.

Dear Shaikh Ali ,

Hi, I would like to ask where you live in Canda.I'd stayed in Calgary by 1990 and worked as a technician in troubleshooting those monitor & power supplies etc. At that time I'd to trace the PCB to draw the schematic to faciliate the job. We were used to order components from Toronto.I was surprise to find that the repair price was high. I remember to fix a monitor with C$80, and even inpection job costed C$20. At that time, renting a room costed only C$120, and the food cost per person was only C$200 monthly.

I left Calgary and returned to HK for a high-paid job, but now I plan to return.I would like to ask how about the repair business in Canada. What is the usual repair price? What sort of electronic equipments are used to repair?

I always go to Shenzhen (China) and get hugh repair information as well as components since Shenzhen is the electronic center in China.I'm the one capable of speaking Putonghwa, cantonese and English so I may be able to give help in doing the translation jobs concerning electronics as well as repair materials.

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By: Leung Wing Kai

Leung Wing Kai — Mon, 27 May 2013 07:39:55 +0000

Sometimes when we find the burnt resistor, it's likely the short diode or rectifier cause the problem.When I was in Canda, I was used to repair the monitor & power supply etc. I usually checked all those diodes & rectifiers to see if they were short. I also checked those big resistors to see if they were burnt or heated up before for passing high current.

If it was lucky I could fix the fault within minutes by replacing those short components.

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By: Jestine Yong

Jestine Yong — Thu, 23 May 2013 09:27:21 +0000

Hi Waleed,

There is a comment about your article. It was contributed by Shaikh Ali from Canada:

"I have a comment on the article by Waleed on speaker system repair. During testing, many circuits can be powered up in series with a 75 Watt lamp rated at the line voltage. The lamp absorbs most of the line voltage if there is a short circuit as described, and prevents further damage. If the device is working properly, the lamp may glow at reduced brightness.
For low power devices one can use a 5 or 25 Watt lamp and for high power devices one can use a 100 or 150 Watt lamp. One can parallel lamps if the higher Wattage lamp isn't available.
For convenience, one may construct a simple circuit using a lamp socket connected to a line cord and leads terminating in alligator clips to attach to the power cord of the device. Lamps of different Wattages can then be easily swapped in and out.
Call me if you ever venture out to Canada."

Shaikh Ali

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By: Jestine Yong

Jestine Yong — Wed, 22 May 2013 07:32:09 +0000

In reply to chantrea.

Hi Chantrea,

You are welcome!

Jestine

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By: chantrea

chantrea — Wed, 22 May 2013 04:26:00 +0000

Thank for your good article Mr Jestine Yong .I enjoy reading.

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