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Identify The Thorn (T.C.E) LOPT

 
crustytv
(@crustytv)
Vrat Founder Admin

Have a rummage in the spares dept this afternoon and came across this B&W TV lopt a pattern part to Thorn spec. Looking to the Thorn lads John (jayceebee) & Jim (jcdaze) to help identify which chassis this is for. Without delving into countless manuals my gut is saying 1600 series. The LOPT looks new and is dated 3/6/1979.

tce1
tce2
tce3
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Topic starter Posted : 02/12/2020 4:09 pm
Katie Bush
(@katie-bush)
Illustrious V-Ratter Moderator

Well, I'm out! - It's not even a jellypot!

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Posted : 02/12/2020 4:30 pm
jcdaze
(@jcdaze)
Trusted V-Ratter Registered

From a not very reliable memory I'm going to say it's for a 1690 series. Now I'm going to have find the manual to check that!

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Posted : 02/12/2020 5:24 pm
Mikey66 liked
jcdaze
(@jcdaze)
Trusted V-Ratter Registered

I've been and found the circuit diagram covering the models below;

1690 12" models 3845,3848,6845,

1691 14" models 3840,3847,6840 ,

1694 12" models 3857,3858 

Originally a different transformer was fitted depending on whether it was a 12" or 14" model. A common transformer was then made available and it's pt. no. was 06D3-048-003. The pinouts are the same as the one you've got. 

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Posted : 02/12/2020 6:04 pm
Jayceebee liked
Katie Bush
(@katie-bush)
Illustrious V-Ratter Moderator

Well now, could it be for Thorn 1615B (3852), as in the set that Mikey66 forwarded to me?

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Posted : 02/12/2020 6:06 pm
Katie Bush
(@katie-bush)
Illustrious V-Ratter Moderator

@jcdaze

Ah, right! I didn't think it was that tiny, and looking at the photos from the 1615B, this LOPT looks deceptively the same (more conventional) shape as the outline printed on the PCB - The LOPT is out of sight on the component side.

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Posted : 02/12/2020 6:09 pm
Jayceebee
(@jayceebee)
Noble V-Ratter Registered

Late in the day and I wasn’t 100% sure but I would have said 1690/1, the grommet on the EHT lead gives it away I think. Locates on the heatsink around the line stage.

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Posted : 02/12/2020 6:36 pm