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Supro Coronado Valco 1690T overheating 10 watt resistor

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The 10 watt resistor actually starts to glow. What is the cause

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2022, December 21 - 18:43
#506653
torokj
torokj picture
14 years 11 months

Hi,
https://elektrotanya.com/supro_1690t_sch.pdf/download.html.
1.Replace the 6L6 tubes .One of these is gassy ,or there is grid-cathode  short circuit.
If you remove the tubes,and the resistor is still glowing ,check and replace
the 10uF/450 V (possible leaking) capacitor .
Good luck to repair!
TJ
 

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