TDA8362 or TDA8362B 'jungle chip' in Daewoo CP365 chassis?
 

A roughly ten-year-old Thorn CT514TN using this chassis does everything
it should except display a picture, whether 'on-air' or from the AV
inputs.
Sound is OK, as is the on-screen display of menus, etc, and it seems to
respond to all commands, including channel-changes.

The problem appears to be that pin21 on the jungle-chip, which should be
at 0.4v, is internally pulled up to about 4.6v (from a supply-voltage,
Vcc, of 8.0) despite a 1K resistor to ground, even when nothing else is
connected to it.
According to a 1994 TDA8362 data-sheet, a voltage between 0.9 and a
maximum of 3.0 will blank the picture (no mention of OSD, which is alive
and well).

Seems a pretty clear-cut case of chip-failure (all supply-voltages are
OK), but obtaining a replacement isn't proving straightforward ...

- On a CP365 circuit diagram (undated) the chip is shown as TDA8362, but
the actual one present is TDA8362B
- My Googling hasn't found any data on other versions than the original
8362, now billed as 'obsolete' on Philips' website.
- I've found several UK suppliers of the 8362, and of 'minidip' versions
with suffixes like EN4, but not of a 8362B.

I'm therefore left with the questions
- What's the difference between the 8362 and the 8362B?
(or "Where can I find data on the latter?")
- Does it matter on this chassis/in this set?

--
Peter Duck

TDA8362 or TDA8362B 'jungle chip' in Daewoo CP365 chassis?
 

We have this part in stock
www.electronica-usa.com

Peter Duck wrote:
A roughly ten-year-old Thorn CT514TN using this chassis does everything
it should except display a picture, whether 'on-air' or from the AV
inputs.
Sound is OK, as is the on-screen display of menus, etc, and it seems to
respond to all commands, including channel-changes.

The problem appears to be that pin21 on the jungle-chip, which should be
at 0.4v, is internally pulled up to about 4.6v (from a supply-voltage,
Vcc, of 8.0) despite a 1K resistor to ground, even when nothing else is
connected to it.
According to a 1994 TDA8362 data-sheet, a voltage between 0.9 and a
maximum of 3.0 will blank the picture (no mention of OSD, which is alive
and well).

Seems a pretty clear-cut case of chip-failure (all supply-voltages are
OK), but obtaining a replacement isn't proving straightforward ...

- On a CP365 circuit diagram (undated) the chip is shown as TDA8362, but
the actual one present is TDA8362B
- My Googling hasn't found any data on other versions than the original
8362, now billed as 'obsolete' on Philips' website.
- I've found several UK suppliers of the 8362, and of 'minidip' versions
with suffixes like EN4, but not of a 8362B.

I'm therefore left with the questions
- What's the difference between the 8362 and the 8362B?
(or "Where can I find data on the latter?")
- Does it matter on this chassis/in this set?

--
Peter Duck

TDA8362 or TDA8362B 'jungle chip' in Daewoo CP365 chassis?
 

The TDA8362 is the SECAM version of the PAL TDA8361.

I.

TDA8362 or TDA8362B 'jungle chip' in Daewoo CP365 chassis?
 

In message . com
"Bill" wrote:

- On a CP365 circuit diagram (undated) the chip is shown as TDA8362,
but the actual one present is TDA8362B
- My Googling hasn't found any data on other versions than the
original 8362, now billed as 'obsolete' on Philips' website.
- I've found several UK suppliers of the 8362, and of 'minidip'
versions with suffixes like EN4, but not of a 8362B. ...

We have this part in stock
www.electronica-usa.com

Thanks, but though Google hadn't found a UK supplier of the 8362B, Lycos
now has.

Seems that it exists in many different 'flavours', each customised for
specific setmakers/models, but fortunately the one required (for a Thorn
CT514TN) is still said to be obtainable.

--
Peter Duck

TDA8362 or TDA8362B 'jungle chip' in Daewoo CP365 chassis?
 

In message .com
"buran" wrote:

The TDA8362 is the SECAM version of the PAL TDA8361.

Thanks: info about the 8360, 8361 and 6362 all appear on the same 1994
Philips datasheet (and all were discontinued in 2001), but my questions
were about the 8362B.

--
Peter Duck