PonyTail

PonyTail waves his hand, here for you in Melbourne, but Trevor is your man for Sydney and north, unless Peter Stein can help from Karanda. (way North) Currently my time for ME repairs is limited by other work and mostly by my mothers health, diagnosed this week with Gillian Barre Syndrome at 94 Years and 50 Weeks, so my attention span here is limited. Fortunately the IVIG treatment and respiratory support over NYE night seems to have helped, but there is a long way to go from paralysis to walking/driving again. Wishing A/all here a happy new year, and hope to be more active here on the forum when I can. Ron/PonyTail.

Yes

Hi Kerry, It would appear that you have a very early ME25 and the capacitors in the remote power supply have been known to fail especially at their age. I would recommend replacing these capacitors and all the electrolytic capacitors in the ME25 and upgrading the 470uF ones to 1000uF. The upgraded power supply (Identified by it using a 12-pin locking connector at the ME25 end rather than a 5-pin DIN connector) is not currently available along with its remote control option, but the above suggestion would offer some benefit. There is a possibility of adding an aftermarket Remote Control but unless your ME25 has the Alps balance and volume controls, this would be a very expensive option as the Balance and Motorized Volume control board from Peter Stein is very expensive.

Hi, I built this amplifier when it came out and it was still in everyday use until last year, still working but now not used. I should have a copy of both magazines, but I'm very sure I still have the December edition, bluish cover if I recall correctly. I'll take a look for them but if not inside then I need to search under the house which could take some time to find the time to search.

@ssb102 A counter-bore will clear the pot, but you still need an End Mill to cut a slot for the PCB.

@Falcon 500 Have you been able to check your messages on this forum? I haven't had a reply yet, Ron/PonyTail.

PM Sent with offer to buy.

You sure you don't mean pF? Even Cat-6 cable is only around 14pF/FT or 160pF/100m

@jakeyb77 said "Aaaaaargh I just moved my ME850 with a bad back for nothing lol" Just stop complaining and be great full it wasn't a ME1400/1500

The hum field from a power amplifier may be quite specific in area. The only ways to reduce it are Distance and Magnetic Shielding. Electrical Shielding provided by an aluminium chassis is only half of the story. I built a power amplifier and preamplifier in the late 70's both in aluminium chassis and had to locate the preamplifier one rack unit below the power amplifier and had to add a 1.2mm thick galvanized steel plate on top of the preamplifier's aluminium top plate to get rid of the hum. Being rack mounted I did not have the luxury of moving the preamplifier sideways.

If you are looking for miniature incandescent lamps often used in vintage gear try Lamp Replacements Australia. They even have a range of miniature lamps with bare wire ends under: Home Lamps OTHER/SPECIALISED INDICATOR/MINIATURE Wire Terminals

@jakeyb77 I'm here! I have spoken to Mr_Gadget and he is dropping the amp in on Monday afternoon.

Why not use the "FrequenSee HD" App on your smartphone? Covers 20Hz to 20kHz Real time graphical display.

The Black end looks like it has an I.C. in it while the Red end looks to have a Ferrite Bead for RFI Suppression in it. Are they just interconnects or have they a special purpose?

@Zaphod Beeblebrox It looks like the upper half of the left channel has been on fire with several resistors burnt.