Electronics Repair

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Further MS2000 synthesizer problems

Here's the service manual for reference: http://www.loscha.com/scans/Korg_MS2000_Service_Manual.pdf I replaced C109 wit...
3 comments posted 10yrs
posted by bitrex
3 comments posted 10yrs posted by bitrex

Surface mount code to device type (Chinese)

Just in case others find it useful. http://www.aliexpress.com/wholesale?catId=0&initiative_id=&SearchText=sot-323+marki...
0 comments posted 10yrs
posted by diverse
0 comments posted 10yrs posted by diverse

HP 3561A

What there is of a service manual is at : http://exodus.poly.edu/~kurt/manuals/manuals/HP%20Agilent/HP%203561A%20Serv i...
17 comments posted 10yrs
posted by jurb6006
17 comments posted 10yrs posted by jurb6006

LCD TV Back Light Inverter Board Repair

I have an LCD TV and one section of the inverter board has a blown fuse that feed +24 VDC to the inverters. The other f...
1 comments posted 10yrs
posted by makolber
1 comments posted 10yrs posted by makolber

Phone charging

if I connect the red 5v+ wire (pin4) from the peripheral connector on a at x pc power supply to the red wire on a USB c...
2 comments posted 10yrs
posted by vdvbert
2 comments posted 10yrs posted by vdvbert

Tantalum Capacitors

So I'm working on repairing a Korg MS2000B synthesizer for a friend with a dead power supply. Here's the service manual...
51 comments posted 10yrs
posted by bitrex
51 comments posted 10yrs posted by bitrex

Before it's put on a slow boat from China

I need a 2.7uf 63V non-polarized capacitor for a speaker crossover. It is a radial lead 10mm x 22mm cap. Ebay has them...
14 comments posted 10yrs
posted by nojunk
14 comments posted 10yrs posted by nojunk

Silicone rubber , longterm structural integrity

Last week I came across some NOS fine bore silicone sleeving. It was dated 1978. Firstly I did not realise it went back...
0 comments posted 10yrs
posted by diverse
0 comments posted 10yrs posted by diverse

Wafer Switch Contact Lubrication?

This question has bothered me for a long time: What, if any, lubrication is appropriate for wafer switch contacts? I'm...
5 comments posted 10yrs
posted by jadney
5 comments posted 10yrs posted by jadney

Boss DR-55 Repair

I'm trying to repair this vintage programmable analog drum machine on my bench. It was water damaged, and it looks like...
8 comments posted 10yrs
posted by bitrex
8 comments posted 10yrs posted by bitrex

Availability of a Roland 100 pin IC?

r02455212, demultiplexer for 7 octave keyboard Roland RD 300SX. Assuming a spares or repair broken piano is not availab...
1 comments posted 10yrs
posted by diverse
1 comments posted 10yrs posted by diverse