Hi Guys
Upon switching on my LA Audio A30 valve amplifier this morning one of the valves from the right channel was not lighting up so i swapped it for another EL 84 and still the same problem still no light beginning to think its the amp that has the fault swapped for the other good valves to still no joy? We bit down in the dumps about this - any thoughts on repair?
Pre & Power
Technics SUC 909U & Technics SE A909S
Turntable
Thorens TD 125 MK1 , SME 3009 S2 Non Improved , Shure V15 II , SME 2000 Plinth
CD Transport & DAC & PSU
Marantz 6005 , Beresford Caiman , Paul Hynes SR4
Loudspeakers
Tannoy 615 MK2
I had the same on the pre-amp side of on of my valve amps and it turned out to be a failed capacitor on the heater circuit, luckily no damage to anything else. I was advised that it is not always a good idea to power them up with a failed valve or circuit in case it overloads elsewhere, but you should be OK. The repair hopefully will be relatively cheap on parts.
Listening is the act of aural discrimination and dissemination of sound, and accepting you get it wrong sometimes.
Analog Inputs: Pro-Ject Signature 10 TT & arm, Benz Micro LP-S, Michel Cusis MC, Goldring 2500 and Ortofon Rondo Blue cartridges, Hitachi FT5500 mk2 Tuner
Digital:- Marantz SA-KI Pearl CD player, RaspberryPi/HifiBerry Digi+ Pro, Buffalo NAS Drive
Amplification:- AudioValve Sunilda phono stage, Krell KSP-7B pre-amp, Krell KSA-80 power amp
Output: Wilson Benesch Vector speakers, KLH Ultimate One Headphones
Cables: Tellurium Q Ultra Black II RCA & Chord Epic 2 RCA, various speaker leads, & links
I think I am nearing audio nirvana, but don’t tell anyone.
Location: South Yorkshire
Posts: 2,683
I'm Andre.
Going by the origin of the amp id be changing all the caps.
Pre & Power
Technics SUC 909U & Technics SE A909S
Turntable
Thorens TD 125 MK1 , SME 3009 S2 Non Improved , Shure V15 II , SME 2000 Plinth
CD Transport & DAC & PSU
Marantz 6005 , Beresford Caiman , Paul Hynes SR4
Loudspeakers
Tannoy 615 MK2
Location: South Yorkshire
Posts: 2,683
I'm Andre.
Not cost much Dan only a handful i suspect there are on the board. Get some decent long life jobbies put in.
Pre & Power
Technics SUC 909U & Technics SE A909S
Turntable
Thorens TD 125 MK1 , SME 3009 S2 Non Improved , Shure V15 II , SME 2000 Plinth
CD Transport & DAC & PSU
Marantz 6005 , Beresford Caiman , Paul Hynes SR4
Loudspeakers
Tannoy 615 MK2
Location: London/Durham
Posts: 6,878
I'm Lawrence.
Location: South Yorkshire
Posts: 2,683
I'm Andre.
No im saying where it was manufactured.