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Discussion Starter · #1 ·
Updates since original post:


1 - It has been pointed Sunkey out by Systems2000 in post #4

that this may also basicly be a SK-801ATSC as well.

I can confirm the exterior to be identical except for the smoked plastic insert.


I have confirmation in POST#8 by NTSC that the board is also the same,

not just the plastic casing.

Seems they chose a different remote control supplier though.



************************************************************


I chose to get a couple of free boxes (with free S&H).


These are the folks that topped Google, so I tried them.

I ordered these two, and they arrived just fine, and free!


*** See model-specific AVSForum threads for info ***


Craig - CVD-508


Artec (Ultima, Jiangsu) - T3AP-LL (LG Tuner)


Note:

They put the two display boxes in a FedEx envelope bare,

they DID NOT provide the display boxes external boxing !

It wasn't even a "Bubble-Wrap" style envelope !


************************************************************


Free-TV Signal -AKA- Cerebral CorTech


Home:
https://secure.freetvsignal.com/index.php


All CECB's:
https://secure.freetvsignal.com/viewAll.php


Website Feedback:
[email protected]


Cerebral CorTech

Mark Bymaster

1718 Corporate Dr

Boynton Beach, FL 33426

561-572-2164

M-F 10A-5P Eastern
[email protected]


************************************************************


Craig - CVD508


External Product Information:


Model Sticker:

Craig

DIGITAL TO ANALOG BROADCAST CONVERTER WITH REMOTE

POWER SUPPLY: DC 12-V, 0.8-A

Craig Electronics International Ltd.

P.O. Box 694650 Miami, Florida 33269, U.S.A.

For Customer Service

e-mail: [email protected]

(Un-Labeled White Sticker = Serial Number)

C090531**** (Last four omitted for privacy)

Manufacture Date: May 2009




Wall-Wart Sticker:

(Transformerless Switching-Mode Type)

AC/DC ADAPTER

SWITCHING POWER ADAPTER

MODEL: TP20S1208

INPUT: AC 100-240V ~ 50/60-Hz 0.8A MAX

OUTPUT: DC 12V = 0.8A

WFFICIENCY LEVEL IV

SHENZHEN TOPOW ELECTRONICS CO., LTD.

MADE IN CHINA


************************************************************


Notes:

Mobile-Friendly:


This unit is negative ground


(Some China TV's are POSITIVE ground, ALWAYS measure !!!)

22.09-Milliamp @ 12.21-VDC (0.27-W) - Standby (Wall-Wart)

337.4-Milliamp @ 11.78-VDC (3.97-W) - Running (Wall-Wart)

(364.7-Milliamp max while booting from flash boot sector)

This model Wall-Wart is terrible at voltage regulation...


The collor is negative,

and chassis ground.


The pin (Or center) is Positive 12-VDC.




Disassembly:

The bottom has four fully visable screws.

Various buttons, and the faceplate will fall off.

There is also a data jack cover on the bottom.

They chose to not use the rear tuner screw.




Tuner:

Samsung tuner is mounted sturdy by four shield corners.

Connection is by a row of 16 (5+11) soldered pins.

Active components are visible without removal/disassembly.


Bottom Access Data Jack J101:

Four pins, #1 is closest to PCB corner (Square solder pad)


#1 = TBA

#2 = Chassis Ground (Also 12-VDC supply Ground)

#3 = TBA

#4 - TBA


************************************************************


PCB Solder Side Numbers:


None


************************************************************


PCB Component Side Numbers:


EC

RU94V-0 (Backwards "R")

E188100 (Sunkey - SK-801ATSC = MS-1E1198407)

EC-2 2009



J1C1 = 4-pin Molex male jack on solder side of PCB:

1 - ? (Square Ground-Plane Relief)

2 - Chassis Ground

3 - ?

4 - ?


Notes:

Protrudes through case bottom, comes with plug cover.

Uses same plug as a standard home-PC audio connector.




JD2 = 3-Pin unmarked/unpopulated sodler pads:

1 - ? (Square Pad)

2 - ?

3 - Chassis Ground




JD3 = 20-Pin (10x2) unmarked/unpopulated solder pads:




J1 = 10-pin marked/partilally populated solder pads:

Silkscreened Information:

01 - Power - Power Button

02 - Down - Channel Down

03 - Up - Channel Up

04 - LED 1 - Green Power-On LED Indicator D8 (Diode-8) Anode

05 - LED 2 - Green Power-On LED Indicator D8 (Diode-8) Cathode (Chassis Ground)

06 - IRE_VCC - Infrared B+ (+3.12-VDCmeasured)

07 - IR_DAT - Infrared Senser Data

08 - Gnd - Ground

09 - IRE_VCC - Infrared B+ (+3.12-VDCmeasured)

10 - Gnd - Ground


Notes:

Pins 7, 8, 9 currently populated by an IR-Detecter hanging long-lead style.

PCB-Mounted microswitches still leave room to use all 10 pins.




D9 - Red Power Off LED Indicator:

1 - Red Power-Off LED D9 (Diode-9) Anode

2 - Red Power-Off LED D9 (Diode-9) Cathode (Chassis Ground)





SoC (System-on-Chip):

Realtek "RMC" Logo

RTD2885S

89F00S1

G838C Taiwan


Info:

!!! Has heatsink on it from factory !!!

MPEG Decoder SoC

Two transport processors

Digital audio decoder

Post-processor

High-definition (HD) MPEG video decoder

2D graphics engine

Digital video processor for both analog and digital video sources

NTSC/PAL TV encoder with Macrovision

Six high-quality video DAC's

Stereo high-fidelity audio DAC's

270-MHz Lexra processor

Peripheral control units for TV control functions

2TS demux

CCIR656 input

PCMCIA/Smartcard for CI/CA

MPEG [email protected]

2D graphic engine

Multi-layer OSD

CCIR656/BT1120 output

CVBS/S-video/Y/Pb/Pr out

I2S, SPDIF out

Stereo audio output

NAND/NOR IF

PCI


Reference Links:
http://www.realtek.com.tw/products/p...n=4&ProdID=134




RAM Memory:

Hynix 909AA A

HY5DU561622ETP=D43

KOR NAEE0849RG1


Info:

16-M x 16 DDR SDRAM

268,435,456-bit CMOS Double Data Rate(DDR) Synchronous DRAM


Reference Links:
http://www.hynix.com/datasheet/eng/g...U561622ETP.jsp

http://www.hynix.com/inc/pdfDownload...TP(Rev1.1).pdf


************************************************************


Samsung Tuner Housing Sticker (White):

SAMSUNG

DTVS22DPH261D

090515 EEC


Info:

?


Reference Links:

?




Tuner Numbers - Component Side:

Not observed,

solder side was visible without removal/disassembly.

Component Numbers - Solder Side:

32-Pin DIP Surface Mount IC

NXP

TDA6509ATT

CM9691 15

TPD09173


Info:

NXP is founded by Philips Electronics...

3-band mixer/oscillator and PLL for terrestrial tuners


Reference Links:
http://www.nxp.com/search/?query=TDA6509ATT

http://www.nxp.com/acrobat_download/...09_6509A_3.pdf




16-Pin DIP Surface Mount IC:

A77000

8XN3


Info:

Sanyo Semicon Device LA77000V

Monolithic Linear IC VHF Band RF Modulator USA CH-3,4


Reference Links:
http://www.alldatasheet.com/datashee.../LA77000V.html

http://pdf1.alldatasheet.com/datashe.../LA77000V.html

http://www.datasheetcatalog.com/data...LA77000V.shtml

http://www.datasheetcatalog.org/data...ksz4w1tgyy.pdf




8-Pin DIP Surface Mount IC:

8123

8XX2


Info:

?


Reference Links:

?


************************************************************


CraigElectronics.com Info:
http://www.CraigElectronics.com/

http://www.craigelectronics.com/contact_us.php




Not Working:
http://www.craigelectronics.com/prod...ne/CVD508.html




Previous Model:
http://www.craigelectronics.com/manu...E0OU1-B0RA.pdf




Craig Electronics

International Ltd

P.O. Box 694650 Miami,

FL 33269-4660, USA

Tel: 1-866-321-7191

Email: [email protected]


************************************************************


TinyPic.com Pictures:
http://TinyPic.com/WeThePeople




01 Craig - CVD508 - Display Box Front




02 Craig - CVD508 - Display Box Features




03 Craig - CVD508 - Formed Packaging




04 Craig - CVD508 - Remote Control




05 Craig - CVD508 - Connection Options




06 Craig - CVD508 - Transformerless Wall-Wart




07 Craig - CVD508 - PCB Component Side




08 Craig - CVD508 - PCB - Heatsink -Shield





09 Craig - CVD508 - PCB Solder Side
 

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Thanks again for the thread start and info!


Your answer to my question over yonder Artec thread doesn't sound too promising (sort of my fear with my previous brand/drug store comments).


I noticed they state "Stereo Audio Output" rather than the typical Dolby Digital Audio. I also don't see the Dolby Digital symbol in any of the pics.


Thumbs up on the heatsink unless the IC is inefficient. I see you got the heatsink to come off. Nice ventilation on the top of the box, looks like Ron gave contracting advice.
 

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Discussion Starter · #3 ·
Sadly, I have absolutely nothing good to say about this box,

so I'll just refrain from saying anything.


If I hadn't gotten it for free, I'd...


Anyway, back to the technical aspects of it.

The Realtex SoC with the heatsink works well within expected thermal boundries.

The IC does not run hot.


I ran the unit (to get the current draw numbers) with the heatsink off and monitored it for excessive heat while doing so,

in my opinion the heatsink has been added as a precaution only.


Although while googlin' around I did find a post out there on the World-Wide-Wait about a person that pulled the heatsink, then reapplied it with CPU paste.

He was commenting that it sizzled when he turned it on.

I suspect he used Arctic Silver paste which is conductive ...


With the ventalation holes too, there are no worries with this box, unlike that 9950 that went up in flames because the tuner sparked-out...

(In theory that was resolved, people stopped saying the F-Connector's were pistol hot after a while...)


On the "Dolby" topic, yes the SoC does support it. It would not run if it didn't. Those are just the bullet-points from the IC manufacturers webpage...


And what is it with manudacturers and "Mute" buttons???


If you have to uncomfortably wretch your finger,

or completely relocate your hand to get the "Mute" button,

your remote control design is a total failure!


Some make you use the other hand it is so far up (or down) in the corner, Grrr.


To me, it is the most used button, especially now that commercials have crossed the 50% mark of the amount of time they occupy in one hour's worth of "Commercial" (Pun intended) programming.
 

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Is there a recall button on the remote? What information does the EPG supply?


This unit appears to be a clone of the Sunkey SK-801ATSC. I believe this was discussed before.
 

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Discussion Starter · #5 ·

Quote:
Originally Posted by systems2000 /forum/post/17042405


Is there a recall button on the remote?

I hazard a guess you mean last channel recall to swap between two channels.

Nope




Quote:
Originally Posted by systems2000 /forum/post/17042405


This unit appears to be a clone of the Sunkey SK-801ATSC. I believe this was discussed before.

I Google'd up that unit and all is the same except for the smoked plastic insert on the front.

That is the "Branded" item they swap-out.




Quote:
Originally Posted by systems2000 /forum/post/17042405


What information does the EPG supply?

Oh, crud, I was hoping to do a tear-down technical review then throw it off a cliff as a frisbie or something...lol.


Um, when I pressed "EPG" (@2:18AM) I was presented with a tri-color vertical list starting at 02:00 and ending at 04:30 comprising of six entry lines.

So far so good, right?


1 - It is limited to 12 characters plus the obligitory elipse (...)

so most programs were undiscernable unless you knew them already.

Paid Prodramming... - Nice gow they made sure THAT fit fine...

Delicious Foo... - Gives you a general example of the problem I describe


2 - I was on a channel that was having a run of a particular show,

so the entries were all the same as the episode name is totally cut off.


3 - You are not allowed to change the channel while viewing your EPG


4 - When you repress EPG on the remote it disappears, then reappears.

It seems that you need to utilize a completely different button to eliminate this thing from your viewing screen.

They were kind enough to place said "Exit" button at the other end of the remote for pure convenience of their customers...how nice...


5 - You are locked out of all other functions of this remote by the EPG,

so when your trying to read it and one of those oh-so-nice ubber-loud commercials comes on in the background you can't even "Mute" it or use the two volume buttons.

In fact, except for the intangibly placed "Exit" button (At the other end of the remote),

no other button seems to do anything.



Are you feeling the love yet?


For the love of pizza, ask me any technical question you would like people.

I'll rip 'er apart and get the data.

(My o-scope's are packed at the moment due to additional construction to my house)

Just dont ask me to turn this friggin thing on again,

or I'll need spackle for the hole in my wall.


This was representitive of almost any and all of several functions I "Endured" during the FOUR minutes I managed to stand poking around functions of infuriating mis-design until I pulled the plug (OK, Wall-Wart..) vowing never to run this again except for tech-tests.


Gosh I hate this box!

Got an in-law you want to drive stark raving nuts?

This might fit the bill, give 'em one for free and see.


***************************************

Quote:
Originally Posted by systems2000 /forum/post/15693116


...The DT502 is very similar to the SK-801ATSC, except it has a metal case and includes many more desirable features and S-Video.


I have all three and prefer the DT502, with the SK-801ATSC a very close second.

Ouch, I find that frightening.

Perhaps I should mail you this clunker for direct comparison?
 

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This has got to be the most technically complete review of the worst box I've ever seen


Going off a point you made, I gave my least favorite CECB (A original DS-9900 I think) to my inlaws for a xmas present. I thought I had the last laugh....until they died and I got it back
What goes around, comes around


I'm guessing you don't like this box
 

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Quote:
Originally Posted by WeThePeople /forum/post/17036356


Updates since original post:


I await someone to look inside and compare to my photo's as confirmation

that the PCB is the same production run as well.

Not just a re-used box for another brands PCB.

I can confirm that your CVD508 board is absolutely identical to the Sunkey SK-801ATSC board, both front and back. (Well except for the IR detectors.) My board is about 10 weeks older then yours and has MS-1E1198407 silk-screened on the front. Tuner is a Samsung DTVS22DPH261D. The remote however is entirely different.


 

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Discussion Starter · #9 ·
Thank you NTSC,

I have added a fair amount of additional data to this section of my teardown:

"PCB Component Side Numbers:"


The tuner number is the same on both brands.


Board Silkscreen Numbers:

E188100 = WeThePeople's Craig - CVD508 board number

MS-1E1198407 = NTSC's Sunkey - SK-801ATSC board number

They both are the same EC class of RU94V-0 (Backwards "R")


They both also seem to have the same:

J1 - UnUsed solder pads for a button array connected by ribbon cable.

JD2 - Unused 3-Pin solder pad set.

JD3 - Unused 20-Pin (10x2) solder pad set.

J1C1 - 4-Pin Molex Male Jack through case bottom.


Interesting about the remote though.

They have the exact same number of functions,

just a way different layout.

Wonder why they chose different suppliers for them?
 

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Discussion Starter · #10 ·

Quote:
Originally Posted by jjeff /forum/post/17043932


This has got to be the most technically complete review of the worst box I've ever seen

Why half-ass something that is already half-assed,

when one can make a complete ass of one's self? ...



To be fair, I was doing the same teardown on two CECB's I got for free (Coupon + Free-S&H).

The Artec/Ultima/Jiangsu T3AP-LL was the one I felt worthy of all the work really...
 

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Discussion Starter · #11 ·

Quote:
Originally Posted by vwoom /forum/post/17044894


Remote layout looks better than the CM's...

Couldn't agree more.

It is the winner of putting the "Mute" button the farthest away possible.

(For a right-handed/thumbed) person I meant.


Bunch of communist lefties must make these?


(Couldn't resist the "Lefty" joke, sorry...)
 

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Maybe the heatsink is for the 12V and therefore 'potentially' automotive use. Does any of the literature say it is for automotive use?


Yeah some of these remote layouts are bizarre, as if they outsourced the designs to primitive countries.


I'm not sure that it spits out Dolby Digital Audio. Decode the stereo portion, yes. It has to be licensed with the stamp displayed on the product.


That Apex DT502 comparison is "frightening," I 'wanted' to get one because the EPG is supposed to be real good (plus the S-vid and smart ant extras).


Well these boxes can always be used to sell a used TV as a package deal (I see that on Craigslist, looks like a scheme to circumvent the gov't rule not to resell CECB coupons).


You guys are funny. "World-Wide-Wait." I hear ya!
 

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Discussion Starter · #13 ·

Quote:
Originally Posted by Floydage /forum/post/17048825


Yeah some of these remote layouts are bizarre, as if they outsourced the designs to primitive countries.

That was the funniest thing I've read in a while!


"So simple a caveman could design it"



Quote:
Originally Posted by Floydage /forum/post/17048825


I'm not sure that it spits out Dolby Digital Audio. Decode the stereo portion, yes. It has to be licensed with the stamp displayed on the product.

Sadly, your right, Dolby Digital output is forbidden in the CECB rulings

even though some units have a (Disabled) digital out jack.


They must however do mixdown of the multichannel Dolby stream,

not just peel off (just) the front left/right streams is my understanding.


I point this out because in It's analog form the additional "Suround Sound"

info in quite a few cases was still present before it was encoded.


Many here and elsewhere have been able to use non-digital surround decoding options

in their AV recievers to regain a surprisinglyy listenable surround effect

by just applying old fashioned analog phase encoding surround techniques

to material that was originally was made for the older analog surround decoders.


Sounds like mock reverse-compatibility to me...



Quote:
Originally Posted by Floydage /forum/post/17048825


That Apex DT502 comparison is "frightening," I 'wanted' to get one because the EPG is supposed to be real good (plus the S-vid and smart ant extras).

Yeah, that was on my short list too, alongside a few that never made it to market/America...
 

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Here is an example more clearly shown, see the bullet Features:

http://www.jascoproducts.com/hdtv/GE...verter-Box.asp


My Zinwell and CM have the Dolby Digital emblems but are less clear about it. The CM does state on the box "Experience digital quality picture and sound."


Question for ya: Is the RF/coax connector audio signal mono on CECBs?

The CM manual lists that connector as mono.

The Zinwell manuals (950A and 970A) don't say but have an audio selection menu description where they tell you to select Line Mode if using the composite connectors or select RF Mode if using the RF connector (the audio works either way on both connectors but is much louder in RF Mode).


These are the only brands I have thus far but my Artec LL should arrive tomorrow (
).


I was being serious ("...outsourced the designs to primitive countries.").
 

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Discussion Starter · #15 ·

Quote:
Originally Posted by Floydage /forum/post/17055184


Question for ya: Is the RF/coax connector audio signal mono on CECBs?

Nah, even though they could have implemented stereo modulators with the MTS/SAP format.

They chose not to mandate it, just the RCA jacks instead.


If they had, they would have to pay royalties to both "DBX Inc." and the subdivision (That got the MTS patents from DBX) called "THAT Corp.".


With the already ridiculous royalties already paid for the video and audio hardware/firmware/codec portions of the CECB's, MTS/SAP would break the price point even farther.


I mean, unless the parts of our airwave spectrum that got auctioned off was aportioned into $75 coupons instead that is.

Then we might have had higher standards of box available.

What me catch crap for that remark now...
 

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So another lucky option to get a box with stereo on the RF. Doesn't bother me per my setups but I could see having one of those economy TVs with stereo but only an RF input (I have two of these outside of the living room but they're mono).

Quote:
Originally Posted by WeThePeople /forum/post/17055499


I mean, unless the parts of our airwave spectrum that got auctioned off was aportioned into $75 coupons instead that is.

Then we might have had higher standards of box available.

What me catch crap for that remark now...

Not from me. Gov't is throwing money at everything else so why scrimp on this?
 

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I have already acquired six Sunkey units and they have the same problem with the EPG. I'd still like to try to upload the firmware that came with the first run Sunkeys to get more capabilities.


I didn't mean that the APEX DT502 is a bad CECB (I absolutely love mine (x3)), I was pointing out that the main boards are probably manufactured by the same plant (the APEX having an on-board power supply, while the Craig and Sunkey are bricks). Performance wise, the APEX DT502, Zinwell ZAT-970A, ZAT-950A, and Sunkey SK-801ATSC perform reception about equal and do it better than any other CECB I've used.
 
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