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DMcMahon · 13th Feb 2020, 11:17 am

Put it back inside its case (after refitting the EL 84 output pentode) and connected the speaker. Tried playing tape in Forward Play at 3 3/4 ips but no sound heard.

With the volume turned up high there is a bit of audible hum from the speaker and when the tape transport switches are pushed there is loud switch noise from the speaker, so there is at least some life in the amplifier.

So very disappointing, I would have thought even with badly worn playback head would have got at least some sound. The tape I tried I think came with the unit so first need to make sure there are recordings on the tape.

From this I found that the switch for switching off the loudspeaker and switching in 5 ohm resistor dummy load is ganged to the potentiometer on the right hand side of the unit, I assume this may be the record level pot.

13th Feb 2020, 11:17 am	#134
DMcMahon Dekatron Join Date: Apr 2019 Location: Worthing, West Sussex, UK. Posts: 6,603	Re: Grundig TK 819 Any Useful Info Put it back inside its case (after refitting the EL 84 output pentode) and connected the speaker. Tried playing tape in Forward Play at 3 3/4 ips but no sound heard. With the volume turned up high there is a bit of audible hum from the speaker and when the tape transport switches are pushed there is loud switch noise from the speaker, so there is at least some life in the amplifier. So very disappointing, I would have thought even with badly worn playback head would have got at least some sound. The tape I tried I think came with the unit so first need to make sure there are recordings on the tape. From this I found that the switch for switching off the loudspeaker and switching in 5 ohm resistor dummy load is ganged to the potentiometer on the right hand side of the unit, I assume this may be the record level pot.