Toshiba RD-XS24SB - HDD & DVD Recorder - Dead

[tmcw]

Re: Toshiba RD-XS24SB - HDD & DVD Recorder - Dead

Thanks, hopefully someone will be able to set me straight, I'll have a good look to see if I can get an exact replacement in the meantime.

Anyhow, I put the other 3 diodes back in, and put the power board back in, and I'm actually getting some life, even with the bad diode now removed, and nothing in it's place. The clock starts flashing "0:00", and eventually displays "E7061", which according to link, seems to relate to the hard drive, which I don't have installed, as there was none in it when I got it. Cables are present. Cooling fan is coming on too!

Display shows "LOCK" when I press the eject button, no response from the other front panel buttons.

I might try hooking it up to a TV, see if there is any video output.

So, when I checked the voltages on the PCON1 and PCON2, I'm getting nice voltages on all except the 12V for pins 3 and 4 on PCON1. I'm also getting 12V and 5V on both PCON3 and PCON4 that go to the DVD and HDD drives respectively.

I guess I need to figure out where the other 12V on PCON1 goes on it's way through the jack board.

I suppose my question for now is why would that one bad diode be messing up all the other voltages? Is it due to some interference at the big transformer in the middle of the board?

[retiredcaps]

Re: Toshiba RD-XS24SB - HDD & DVD Recorder - Dead

I suppose my question for now is why would that one bad diode be messing up all the other voltages?

I wouldn't say the missing diode is messing up the other voltages. The functions that depend on that diode aren't probably initialzing properly due to the lack of voltage.

[Th3_uN1Qu3]

Re: Toshiba RD-XS24SB - HDD & DVD Recorder - Dead

Since all voltages come from the same transformer, of course a short on one of the rails will bring down all others.

Time for a new diode.

[tmcw]

Re: Toshiba RD-XS24SB - HDD & DVD Recorder - Dead

Thanks, yes, I'll seek out the diode.

I tested the unit on the TV, and although I didn't get an output on SCART, the composite is outputting video, I did see a Toshiba startup screen, but it then went to an analogue channel when the error came up. Perhaps the SCART processing needs the 12V, but the composite doesn't.

I did try a hard drive, but it I still get the error, I reckon I will need to figure out how it needs to be formatted or jumpered, or the board setup to only use the DVD drive.

[Th3_uN1Qu3]

Re: Toshiba RD-XS24SB - HDD & DVD Recorder - Dead

The hard drive needs 12v as well. Put that diode in already.

[tmcw]

Re: Toshiba RD-XS24SB - HDD & DVD Recorder - Dead

They're already getting their 12V, if you look at the schematic for the SMPS, PCON3 and PCON4 have their 12V and 5V generated differently to the 12V that should be generated via the faulty diode. These voltages go directly to the HHD and DVD drive (like in a PC), and they are ok, maybe the 5V is even too high at 5.61V? (12V on those connections there are 12.11V)

The bad 12V goes to the jack board, and a quick look at it's schematic looks like the 12V is used in the generation of the SCART signals. I think it might be used in an autoswitching switch signal, but it might be used elsewhere too.

Just wondering if I can use the alternative 12V as a source to supply the jack board with 12V, or better to keep them separate.

[Th3_uN1Qu3]

Re: Toshiba RD-XS24SB - HDD & DVD Recorder - Dead

They probably had a good reason to separate them. Namely, a hard drive is a device with motors, and motors put a lot of noise on the supply lines. You don't want interference with your display everytime the HDD seeks do you.

[tmcw]

Re: Toshiba RD-XS24SB - HDD & DVD Recorder - Dead

I tried it anyway, just to test (nothing to loose) and SCART is now coming up ok. I had a good look at the schematics in the service manual, and that 12V coming from the found bad diode is only used on the jack board, it doesn't go to the main board.

I got a hard drive, have it all connected up, and jury-rigged the 12V for the HDD to the 12V line for the jack board, and I initially get a flashing clock. Pressing the on button shows a Toshiba splash screen, HDD spins up, then I get like an untuned channel (static) with a channel name (NET2) and number (6). I then get the E7061 displayed.

Having done a bit of research, the error could be due to the HDD being only 80GB, when the original was likely 160GB (link link, but I don't have a 160 or larger to test right now.

One other thing I noted was that there is supposed to be a 3.3V and 1.5V going to the main board. The 3.3V is generated at the power board, but the 1.5V seems to be derived on the jack board, but is actually 2.1V. Could this overvoltage cause issues for the main board?

[guebr]

Re: Toshiba RD-XS24SB - HDD & DVD Recorder - Dead

Hi tmcw!

Did you get further experiences about your Toshiba?
I own the same device (RD-XS24SG) but DVD-Drive is fault, but HDD worked fine.
After I had a solution for DVD-Drive now, HDD get fault and don't work.
Now I get also E7061 and I tried many things up to low-level-format HDD.
Nothing works.

Btw. on Scart at the same time HDD fails there also sound is gone. Could there be a relation?

Thanks,
Guenter

[tmcw]

Re: Toshiba RD-XS24SB - HDD & DVD Recorder - Dead

I did actually...

As soon as I put a big enough hard drive into it, it worked fine. I got the unit from a dumpster, and the original hard drive had been pulled, I'm guessing originally a 160GB, so when I finally got a 250GB that I could experiment with, after putting it in, and starting up, IIRC, the unit prompted to format the HDD, and the unit now seems to start up and operate normally, as far as I could test it at least. I don't have the original remote, so I'm a bit restricted in how much testing I could do, but it was recording and playing back recordings and DVDs.

I didn't replace the diode that I found bad, but as far as I can tell, it's involved in the SCART side of the jack board. Composite works fine though, so I was testing it using that. So if you have the cables to test, try using the composite and audio outputs (yellow, red and white RCA connectors).

Going by what you've said, I think I would begin with trying another HDD and see if that resolves the problem (I had to experiment with the jumpers before I got it right, didn't have the original HDD to see how it should be jumpered, so be careful about that.). After that, you may need to make sure the voltages off the power board are ok, then go from there. If you had any cables going to any of the devices (HDD, DVD), make sure that they are seated correctly. IIRC, the cable to the HDD is flimsy enough.

[guebr]

Re: Toshiba RD-XS24SB - HDD & DVD Recorder - Dead

Hi!

I used the original HDD, Seagate 160GB, but also another Seagate with 80GB.
HDD is jumpered to CS (Cable Select).
I own the original remote control.
In other forums I read, there are problems by changing HDD. But I can't imagine this and you confirm this.
I tested flat-cable for HDD connection and it seems ok.
But in the wiring-diagram the 5V for HDD, Loader and PCONN02 are come from the same source. I don't know, wether inside HDD voltage is used, because HDD spins up so it could be, 12V used for spin-motor, but if there is no 5V interface is not active and recorder find no HDD.

I will test 5v.
Thanks

[guebr]

Re: Toshiba RD-XS24SB - HDD & DVD Recorder - Dead

Now I find the time to work further on the device.
5V was ok. So I have a look at the HDD-Cable.
The plug was very groggy and after many power-on steps it works.
So I fix the plug with glue and hope it works fine now (for a long time).