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Old 6th April 2008, 01:55 AM   #141
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interesting. Looks like I have a bunch. wanna trade for pair of 1830?
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Old 6th April 2008, 02:34 AM   #142
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Sure, I can even add one RTX. ;-)
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Old 6th April 2008, 09:23 AM   #143
Puffin is offline Puffin  United Kingdom
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I am awaiting delivery if the JVC Boombox. Idle hands could be a dangerous thing ! I have butchered an old Sanyo Boombox as a peek inside led me to believe that the same chips might have been in it. They are not, but the transport is easily detachable and a search for a data sheet, gave me the pin outs of the chip.

There is a dig out at pin 43 and a 16.9344 output pin at pin 58. I connect to which pin and ground ? There is another pin designated (Digital Filtering D/A Converter interface) I assume I ignore this ?
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Old 6th April 2008, 11:01 AM   #144
lazenna is offline lazenna  Australia
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can someone tell me how wide and high is the pcb that holds the lcd display from the jvc?
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Old 6th April 2008, 01:30 PM   #145
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Quote:
Originally posted by lazenna
can someone tell me how wide and high is the pcb that holds the lcd display from the jvc?

The EZ31 pcb is 200mm x 50mm..
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Old 6th April 2008, 05:25 PM   #146
johnm is offline johnm  United Kingdom
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Thanks for the goods Peter - payment sent.

Would it be possible to post a quick sketch of how to wire up the digital output/resistors combo.? I have studied the pictures already here but I still have brain fog

Many thanks!

- John

P.S. Audio1st, just want to say I LOVE your Shigaclone - looks absolutely fantastic! I don't suppose you'd consider sharing any of your secrets would you? That wooden plinth is stunning! Thanks.
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Old 6th April 2008, 05:38 PM   #147
steenoe is offline steenoe  Denmark
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Quote:
Originally posted by audio1st



The EZ31 pcb is 200mm x 50mm..
Any chance to cut some of that PCB away, and still keep it functional? What are the 2 pushbuttons to the left of the display for?



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Old 6th April 2008, 05:52 PM   #148
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As I was working recently on a new display board, here's the actual schematic, the one in service manual is not exactly accurate.

I also simplified it for my needs, with only 4 main buttons. The other 2 buttons are for programming and repeat. I only need them on remote.

The digital output resistors are also explaned there.
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File Type: jpg display.jpg (56.4 KB, 4550 views)
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Old 6th April 2008, 05:54 PM   #149
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And that's how I implemented new display panel, the wires run through the hole in the bamboo platform (back to front).

The power to LED is taken right after rectifiers (for 18V I find 4k resistor about right)
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Old 6th April 2008, 05:56 PM   #150
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I still need to find spot for remote receiver.

I placed it behind display window and it works from 2 feet, but for longer distance it's no good.
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