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FERNSEH · 3rd Feb 2018, 9:56 pm

Brought this GEC BT1091 into the workshop from storage upstairs. The first fault to sort out is the failure of the frame timebase caused by the faulty valveholder of the KT61 output valve.
The under chassis picture shows that many components have already been replaced. The capacitors will be recognised as the type sold by Maplins.
The fourth and fifth pictures show a small single valve unit fitted above the deflection components. No mention of this assembly in the service manual, at least it's not in the issue No. 120.

The GEC BT1091 was possibly the companies first TV to employ flyback EHT.

DFWB.

3rd Feb 2018, 9:56 pm	#1
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Gec bt1091. Brought this GEC BT1091 into the workshop from storage upstairs. The first fault to sort out is the failure of the frame timebase caused by the faulty valveholder of the KT61 output valve. The under chassis picture shows that many components have already been replaced. The capacitors will be recognised as the type sold by Maplins. The fourth and fifth pictures show a small single valve unit fitted above the deflection components. No mention of this assembly in the service manual, at least it's not in the issue No. 120. The GEC BT1091 was possibly the companies first TV to employ flyback EHT. DFWB. Attached Thumbnails