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Old 13th December 2008, 02:41 AM   #2501
ccschua is offline ccschua  Malaysia
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I made a mistake and connected the V+ to the wrong pin of the LCD.

Smell some smoke coming out from the LCD panel and the BJT Q702 is burned.

Now the LCD display is stuck '38' and door does not work.

any help please.
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Old 13th December 2008, 08:11 AM   #2502
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Hi,
Q702 is not needed so it can be removed..You must have connected V+ to a SYNC wire.
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Old 13th December 2008, 10:53 AM   #2503
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Quote:
Originally posted by Badge
I put a 10K ohm resistor in series off the DC output of the power supply. I never did see any back light so I checked voltage. I had 7.5 volts. I am assuming I destroyed the LED? How do I access the LED for replacement? Looks like the whole display needs to removed? So close yet so far.

Just remove the triangular lid and desolder the LED from the back..
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Old 13th December 2008, 01:41 PM   #2504
kevinkr is offline kevinkr  United States
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Quote:
Originally posted by Badge
I put a 10K ohm resistor in series off the DC output of the power supply. I never did see any back light so I checked voltage. I had 7.5 volts. I am assuming I destroyed the LED? How do I access the LED for replacement? Looks like the whole display needs to removed? So close yet so far.

It isn't necessarily the case that you destroyed the LED, you must have connected it backwards though. (The led reverse breakdown voltage is certainly lower than 7V, but the current was limited and it might/might not have survived the experience.) Recheck the connections first, (no errors, missing ground?) reverse them if necessary and then if finally replace the LED if necessary.
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Old 13th December 2008, 03:23 PM   #2505
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Today I finished the Tunami powercord for the Pitbull
tomorrow I will make the connection...5 meters straight into the cabinet....very curious (more details dutch forum)

Each component has its own dedicated line with audiofuses...
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Old 13th December 2008, 04:42 PM   #2506
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Quote:
Originally posted by valo



I got the idea from this cdplayer, and this one is not an DIY player .. looks like a mess in ther but nice on the outside
Click the image to open in full size.
Click the image to open in full size.

anyway iam saving my big caps for an nie amp
Hi Valo,

Don´t mind me asking you this question but why change or try to modify a ´VERY GOOD´ transport like the Forsell Air Reference

Anton.
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Old 13th December 2008, 04:42 PM   #2507
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@audio1st

I would really aprisiate if you find some time to replay on my post at sureelectronics tripath board.
Thank you in advance!

Sorry for OT.

Best regards,

Woody
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Old 13th December 2008, 04:51 PM   #2508
Badge is offline Badge  United States
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Thanks for the info on my LED. I did check it with a meter and get no forward resistance so I did fry it.
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Old 13th December 2008, 05:19 PM   #2509
hayenc is offline hayenc  United States
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Quote:
Originally posted by Badge
Thanks for the info on my LED. I did check it with a meter and get no forward resistance so I did fry it.

Consider it an opportunity to choose the color for the display that you desire. I really did not like the orange, but the blue looks really nice now. It is an easy replacement.
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Old 13th December 2008, 10:41 PM   #2510
ccschua is offline ccschua  Malaysia
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Is it possible just to purchase the LCD panel as replacement ?
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