Customer states that this active speaker (part of a pair) was cutting out during performance and felt it was overheating. Despite the fan coming on, I was able to repeat the issue on the 1000W dummy load with a particularly bass-heavy piece of music driving fairly hard – the bass amp would cut out and […]
Alto TS112A Trusonic overheating Read More »
Here’s a Fostex X-15 4-track cassette deck in for repair – owner had tried swapping some parts over from a donor machine to fix an issue with the head block plastic breaking (known issue with the X-15 portastudio), and got in a bit of a mess, no playback etc. First thing noticed, the four record
Fostex X-15 Multitracker Repair and Service Read More »
Customer somehow inadvertently and accidentally moved the voltage selector switch from 220 to 110V, plugged in to hear a fair crack and now dead! Fuse had blown – after putting a temporary fuse in, brought up power slowly, could hear some loud intermittent cracks I expect coming from a partially shorted capacitor (which took the
Ampeg PF500 accidental blowup Read More »
Using 0.75mm 3-core harmonised colour SY cable, with shield only connected at plug end:
Couple of shielded mains cables made up Read More »
Customer wanted a couple of ‘budget’ balanced cables made up to replace noisy single ended cables.
2 x 25ft TRS – XLR speaker cables made up Read More »
Customer said their LK-1 “wasn’t behaving right” (pops/clicks between channels) so asked me to take a look. Several faults found (including some not noticed/mentioned by customer) on preamp board, including dead BC212L transistor shorted in the MC input (LH channel dead/buzzing), a faulty analogue switch IC DG309CJ causing popping switching to/from tuner input amongst other
Linn LK-1 preamp and LK-2 power amp full service Read More »
Customer asked if could take a look at this speaker to see if it could be fixed. Why not?! Powered up and all seemed ok for a minute or so, but then as warmed up, could hear some very odd distortion occurring under load. Inside we have a module, which was getting very hot. This
dB Technologies Flexsys FM10 powered monitor speaker distortion Read More »
This customer’s RCF active speaker was apparently lent out and came back broken – unfortunately the negative rail mosfet and output transistors are short circuit, blew rail fuse – the woofer appears to have overheated and voice coil resulted in shorted turns which would have taken out the power amp (overdriven, probably clipping for ages!).
RCF ART310 Class-G active speaker repair Read More »
Customer was unable to continue running the FatTrack on 230V conditioned supply and was thinking it was overheating again. The rectified voltages from the original 2x115v primary 2 x 18v secondaries toroidal transformer should be 22V but on our 250V mains were measuring as high as 28V, the HT (from cascaded voltage doubler circuitry) should
Return of the TLA FatTrack! Read More »
I didn’t get such a good vibe when seeing the corrosion presented around the externals: And naturally the insides didn’t look too optimistic… (but this hasn’t been enough to decline repair in the past) However despite being one of the worst examples (with corroded broken tracks under the 10 way IDC socket too!), neutralised all
Another Linn Kairn battery leak Read More »
Customer stated their Focusrite interface no longer responds on Firewire, and had been repaired by Focusrite for the same problem in the past. Identified the TI TSB41AB2 Firewire IC as the most likely point of failure and managed to remove easily thanks to ChipQuik. In fact it was apparent that the IC was not properly
Focusrite Liquid Saffire 56 broken Firewire fix Read More »
Sourced replacements but were supplied centre-detent versions, but a quick hack sorted that by removing the clicker ring: And fitted
Alesis DM10 broken volume pots Read More »
