Electronics > Repair
SUCCESSFULLY REPAIRED-Hameg hm5006
vlelectroniclab:
hello everyone,
could someone help me with this hameg hm5006 spectrum analyzer?
basically this instrument fell and did not turn on anymore, I disassembled the power supply and replaced the tda4506 and after many attempts it turns on and works for a couple of hours.
I turn it off and on again and I hear a bang, I disassemble the power supply board and find acid on it, so I replace all the capacitors but nothing, it turns on late and the screen does not work anymore.
I attach the manual.
thanks in au.
Harry_22:
Hi!
Have you checked the voltages acoording to service manual?
Please be careful there is 2 kV present here!
Could you make a good photos of PS.
vlelectroniclab:
hi,
thanks for the reply.
i checked the voltages and they are 0v when it does the fault.
after several attempts to put and remove the plug it turned on, i measure the voltages and they are all ok as the manual says.
the cathode ray tube does not turn on anymore while all the other things work.
Harry_22:
Check the voltage on pin 6 TDA4605 when PS does fault.
It must be above 12(13max) VDC to turn PS on.
Also check voltages on C1017 and pin 3 TDA4605.
vlelectroniclab:
PIN 6 11,8v don't work, 12,4v work
PIN 3 0,5v don't work
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