Late 80's or Early 90's DVD Player VooDoo - Page 1
Forum section: electronics / projects

author: Terabyte2007
author_rank: Frequent Contributor
timestamp: August 12, 2013, 12:27:45 pm
content: I was doing a teardown on a no name brand something like TMK or some BS like that to salvage the transformers, supplies and etc. and ran across something I have never seen! The audio input jacks were replaced with a single stereo RCA cord that was strained relieved and soldered directly onto the main audio and processing board. Has anyone ever seen this kind of voodoo before?

author: wraper
author_rank: Unknown
timestamp: August 12, 2013, 04:33:53 pm
content: It wasn't replaced with a cable. On your pictures there are separate holes and silkscreen for the wires. They just used that board for different models.

author: Terabyte2007
author_rank: Frequent Contributor
timestamp: August 12, 2013, 04:44:04 pm
content: Yes I realize that it was not replaced because of the silkscreen, it's just that I have never seen a unit from the factory with attached audio cables!

author: David_AVD
author_rank: Super Contributor
timestamp: August 12, 2013, 10:18:34 pm
content: Some of the cheaper "component systems" did this. Mainly on tuners, etc that also had a ELV power input flying lead as well.

author: Andy Watson
author_rank: Super Contributor
timestamp: August 12, 2013, 11:58:22 pm
content: The early Philips CD players had that arrangement (CD104 ~ 1985 ish?). I can't see a manufacturing advantage to be had so I guess it was more to do with consumer expectations, i.e. at the time, only hi-fi geeks would have known how to deal with a phono-phono lead, whereas your mass-market consumer would be much happier if they only had to worry about finding one set of sockets to stuff the player into.

author: Terabyte2007
author_rank: Frequent Contributor
timestamp: August 13, 2013, 12:00:47 am
content: Quote from: David_AVD on August 12, 2013, 10:18:34 pmThat makes sense. Thanks, I was just curious. Got a Burr Brown DAC out of the unit, surprising!

author: Paul Moir
author_rank: Frequent Contributor
timestamp: August 13, 2013, 12:02:21 am
content: Oh, I'm sure a couple consumers managed to plug the right audio out into the DVD player's composite video out, and the left into the TV's in.

author: krivx
author_rank: Frequent Contributor
timestamp: August 13, 2013, 12:17:46 am
content: I kind of doubt this DVD player is from the late 80s or early 90s...

author: Hydrawerk
author_rank: Super Contributor
timestamp: August 13, 2013, 12:48:34 am
content: http://en.wikipedia.org/wiki/DVDDVD was introduced in year1995.

author: Paul Moir
author_rank: Frequent Contributor
timestamp: August 13, 2013, 12:52:26 am
content: The rest of us bit our tongues so we wouldn't show how old we were...

author: Stonent
author_rank: Super Contributor
timestamp: August 13, 2013, 01:04:10 am
content: Yes I have seen that before.

author: Terabyte2007
author_rank: Frequent Contributor
timestamp: August 13, 2013, 11:47:01 am
content: Quote from: Hydrawerk on August 13, 2013, 12:48:34 amYes you are correct, I remember that and did not even think of that. There was no date code or year of manufacture. My guess, it had to be an early one because the laser block was huge! It even had a 8 pin laser driver chip separate from the block (Which I promptly harvested). Really cool to see how the early players had machined laser blocks of aluminum that could be completely disassembled down to each component.

author: Terabyte2007
author_rank: Frequent Contributor
timestamp: August 13, 2013, 11:50:14 am
content: Quote from: Paul Moir on August 13, 2013, 12:52:26 amNo worries, I should have remembered that the DVD was introduced in 1995. My bad!

author: rkupka
author_rank: Regular Contributor
timestamp: August 13, 2013, 11:54:52 am
content: I have this in my old MARANTZ CD player. L/R output cables soldered on the board and none RCA cinch outputs.

author: amyk
author_rank: Super Contributor
timestamp: August 13, 2013, 12:10:11 pm
content: If a DVD player existing in the late 80s, it would certainly be voodoo...I clicked on this thread expecting an early prototype or something like that.

author: nanofrog
author_rank: Super Contributor
timestamp: August 13, 2013, 05:32:23 pm
content: Quote from: amyk on August 13, 2013, 12:10:11 pmOr they borrowed Doc Brown's Delorean.

author: SeanB
author_rank: Super Contributor
timestamp: August 13, 2013, 07:10:43 pm
content: I have a very dead B&O cd player in the garage awaiting teardown, has a nice old Phillips moving coil laser assembly in it.