From: Franc Zabkar on
Does anyone have a user manual for a Blaupunkt TV model BT 70-26 VT?

Service manual for Blaupunkt TV chassis FM550.20, or circuits for the
audio section (IF and output)?

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
From: Franc Zabkar on
On Tue, 08 Jul 2008 09:15:18 +1000, Franc Zabkar
<fzabkar(a)iinternode.on.net> put finger to keyboard and composed:

>Does anyone have a user manual for a Blaupunkt TV model BT 70-26 VT?
>
>Service manual for Blaupunkt TV chassis FM550.20, or circuits for the
>audio section (IF and output)?

I think I've found a service manual. The Blaupunkt chassis appears
identical to a Grundig CUC6330 chassis:

http://www.eserviceinfo.com/download.php?fileid=1168
http://www.eserviceinfo.com/download.php?fileid=1169

The uP is labelled "CUC6330PAL.02".

Unfortunately the circuit diagram for the PAL IF Amp PCB
(29504-102.57) is mentioned but not shown. :-(

The fault I'm seeing is no audio. It looks like a problem with the
TDA6612-5 stereo sound IC. The two TDA7245A amps look OK. The only
other possible candidate appears to be a Telefunken U2840B FM IF amp
and demodulator for which I have no data.

I have disconnected the I2C pins from the TDA6612-5 chip to see if the
TV behaves any differently, but it does not.

I still need an owner's manual because the remote's menu system is not
intuitive, at least not to me.

I'll try the AV inputs when I get a SCART cable.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
From: Heinz Schmitz on
Franc Zabkar wrote:

>>Service manual for Blaupunkt TV chassis FM550.20, or circuits for the
>>audio section (IF and output)?
>
>I think I've found a service manual. The Blaupunkt chassis appears
>identical to a Grundig CUC6330 chassis:

Another source for your manual :
http://www.schaltungsdienst.de/index.php?id=22

Enter FM550.20 into the field "Modell" and you read what they have,
eg:
BLAUP SERVICE MANUAL FM550.20 D;GB 1238368 8622400316
E

This is price group "E". You'll have to drop them a note as to actual
price and shipping/handling/payment.
I did several transactions with them and they are for real.

Regards,
H.



From: Franc Zabkar on
On Tue, 08 Jul 2008 10:42:44 +0200, Heinz Schmitz
<HeinzSchmitz(a)gmx.net> put finger to keyboard and composed:

>Franc Zabkar wrote:
>
>>>Service manual for Blaupunkt TV chassis FM550.20, or circuits for the
>>>audio section (IF and output)?
>>
>>I think I've found a service manual. The Blaupunkt chassis appears
>>identical to a Grundig CUC6330 chassis:
>
>Another source for your manual :
>http://www.schaltungsdienst.de/index.php?id=22
>
>Enter FM550.20 into the field "Modell" and you read what they have,
>eg:
>BLAUP SERVICE MANUAL FM550.20 D;GB 1238368 8622400316
>E
>
>This is price group "E". You'll have to drop them a note as to actual
>price and shipping/handling/payment.
>I did several transactions with them and they are for real.
>
>Regards,
>H.

Thanks. However, as the TV is a 12 year-old 68cm set, and the suspect
IC looks like costing AU$50 delivered, I think the customer probably
won't go ahead with the repair if I have to add the cost of a manual.

BTW, Grundig Australia's service rep (United Electrical Engineering
Pty Ltd) didn't want to know me. I was told that they didn't support
old CRT sets. Instead I was advised to contact Grundig directly.

BTW, I have no idea who is the service agent for Blaupunkt TVs in
Australia. I have basically given up looking for them.

Moral of the story: Don't expect any support for a German TV in
Australia, at least not outside of the warranty period.

To assist others in cross-referencing Grundig chassis with Blaupunkt
and other brands, here are two URLs I found useful:

TVT Forum | Gesucht und Gefunden | Grundig Vergleichsliste:
http://www.tvtechniker.de/forum/thread.php?postid=10241

Baugleiche Grundig TV's:
http://www.museumsorganisation.de/Baugleiche/TV/grundig.htm

Here is an alternative link to Grundig manuals including the CUC6330:
http://www.electronica-pt.com/index.php/component/option,com_remository/Itemid,34/func,startdown/id,2150/

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
From: Heinz Schmitz on
Franc Zabkar wrote:

>Thanks. However, as the TV is a 12 year-old 68cm set, and the suspect
>IC looks like costing AU$50 delivered, I think the customer probably
>won't go ahead with the repair if I have to add the cost of a manual.

I was afraid to read that :-). Probably I would be able to fill earths
biggest hole for free with CRT-devices, would I only come by to
take them.

>BTW, I have no idea who is the service agent for Blaupunkt TVs in
>Australia. I have basically given up looking for them.

Did you play a bit with their site?
http://www.blaupunkt.com/html/index.htm

>Moral of the story: Don't expect any support for a German TV in
>Australia, at least not outside of the warranty period.

This is a global phenomenon. The gadgets are baked, packed
and said good-bye to. Customers? Drop dead after having paid.

Anyhow, good luck and
regards,
H.