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NEC TG-16/TE/TurboDuo => TG/PCE Repair/Mod Discussion => Topic started by: saturndual32 on August 21, 2011, 09:33:52 AM

Title: Need some info for a replacement part
Post by: saturndual32 on August 21, 2011, 09:33:52 AM

Its called "D303", and its found below the motherboard, below the section where the sound hardware is.
Hope this image comes out ok:
(http://www.freeimagehosting.net/) (http://www.freeimagehosting.net/9175e)
Need some info on it, in order to buy the replacement. Its a japanese PCE Duo it says "PI-TG8" below the unit.
Thanks in advance.

Title: Re: Need some info for a replacement part
Post by: thesteve on August 21, 2011, 05:54:33 PM

that looks to be a common diode.
its very likely you have a short after it that caused its failure

Title: Re: Need some info for a replacement part
Post by: saturndual32 on August 22, 2011, 08:53:43 AM

Thanks thesteve:
Well, i forgot to mention that the last capacitor i replaced, one of the 100uf close to the cd drive, blew up on me twice. Seems i was conecting the negative side to the positive side. I dont know if the diode got damaged because of that, or if it was like that from before. Anyway, the unit has no problem playing hucards, but cant read cds and doesnt play any sound now.
Does anyone know what kind of diode i have to buy for replacement?

Title: Re: Need some info for a replacement part
Post by: thesteve on August 22, 2011, 10:19:15 AM

in surface mount not sure, but a 1n4001-1n4007 is a great part that will do the job

Title: Re: Need some info for a replacement part
Post by: saturndual32 on August 22, 2011, 03:25:28 PM

Ok thesteve, i will ask for one of those you mention. Thanks again.

Title: Re: Need some info for a replacement part
Post by: Charlie on August 23, 2011, 12:53:31 PM

DAN114 on the diode...It's connected to C325, a 100uf.  They are part of the "anti-thump" line that turns the sound off when you first turn on the system, so you don't get a big "WHUMP" out the speakers.  However, if you're having a problem in that area, you may very well have blown transistor 308.  That would keep the sound off permanently.  If so, it's a 2SA1073.

Charlie

Title: Re: Need some info for a replacement part
Post by: saturndual32 on August 23, 2011, 01:20:32 PM

Thanks for the info Charlie!, cant wait for the end of the week to have time to check it out and try the repairment.

Title: Re: Need some info for a replacement part
Post by: saturndual32 on September 18, 2011, 03:28:25 PM

Well i replaced the diode and like Charlie said, i still get no sound. Can someone tell me were the transistor 308 that Charlie mentioned is located?

Title: Re: Need some info for a replacement part
Post by: thesteve on September 18, 2011, 03:34:38 PM

the transistor is next to the diode and marked Q308 in your picture

Title: Re: Need some info for a replacement part
Post by: saturndual32 on September 18, 2011, 04:02:01 PM

Oh, so thats the one, hehe. I tought it was another diode. Thanks thesteve.

Title: Re: Need some info for a replacement part
Post by: chop5 on September 18, 2011, 07:10:42 PM

sorry