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  1. #1

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    Default Just sent my Jolida into its protection mode but it seems to be OK?

    Had a little scare this morning.

    Fired up the Jolida below. Waited a couple of minutes, cranked her up some and within a minute the amp "cut out", POPPED and the red light came on. In effect it shut itself down. I checked the manual--evidently the JD-303 has a protection circuit and it claims that if you wait and the unit powers up again you're probably OK?

    I powered everything down. Turned the unit off (back switch). Disconnected the power cord, made some coffee, read a newspaper then came back upstairs and hooked everything back up after checking my connections.

    While I was checking the connections, I DID notice that a couple of the speaker terminals were NOT making complete contact with the wire. In other words, two wire ends were a little loose? I'm using 14 gauge bare copper wire back there. So I tightened everything down turned on the amp and it powered up as normal, tubes started to glow, bias indicator lights turned on one at a time. And, as far as I can tell, we're OK, fingers crossed.

    I am, by no means seasoned in the field of tubes (my first excursion BTW..made sometime last year). But I am assuming that the loose wires may have been the culprit because the amp cut out as I tried to increase its power!

    What say you tube guys? I know you're NOT supposed to turn a tube amp on if it is not connected to speakers so I was a little nervous when I saw my wires were a bit loose!

    cnh
    Onkyo TX-SR 805 System #1 HT AVR
    Office Two Channel: LSi-7s (Nakamichi CA-5, NAD 214, Pioneer BDP51fd)
    Vintage Polks: Polk Monitor 5As, Monitor 7Bs [HK 730], Monitor 10As [Marantz 2265], SDA-2Bs [Jolida JD-303, Jolida MV-MK4]
    Headphones: HD600, Q701, ATH-M50s etc. Bravo Audio Ocean amp., Onkyo P-304, Adcom GFA-555, Technics Direct Drive TT

  2. #2

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    Along the Eastern shore of Lake Michigan
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    Default

    Everything you said is correct, first connect then power on, and that's from VERY old school. Sorry this happened to you but it sounds like you escaped the grim reaper. I no longer have any bare copper connections and it's not because of any sonic purity debate but it is the result of some near misses and some blown gear. As I am a bit older now my eyes are not as keen as they one were and it's difficult seeing those fine little hair-like strands of wire, especially on the busy backside of a receiver. Also some speaker placements make it challenging to get into position for the connection. Spades and Bananas for me and I just opened a new box of MIT's from Joe and really like all the mechanical connections...I can see them.
    Main Family Room: Sony 46 LCD, Sony Blue Ray, Sony DVD/VCR combo,Onkyo TXNR 708, Parasound 5250,
    Polk SDS-SRS with mods, CSI 5 center + Klipsch SC2, Polk RT2000P rears, Klipsch KG 1.5's sides, Polk Micro Pro 1000, Polk Micro Pro 2000, Polk SW505, Belkin PF60, Signal Cable Classics,Monster IC's, 2 15 amp circuits & 1 20 amp circuit.

    Living Room: Belkin PF60, Parasound HCA2200, MIT ProlineEXP balanced IC's,Emotiva XDA-1 DAC/Pre,Emotiva ERC2 transport,MIT AVT2, Polk LSI 9's.

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