Comments on: marantz 4270 repair

By: Arnebukowski

Arnebukowski — Wed, 03 Feb 2010 10:31:02 +0000

Cool, i have refreshd my 2270 and 4270 Marantz Receiver too. Now it looks new like too. I have over 400 Vintage Stereo thinks. Grundig, Luxman, Marantz, Sony, Chartwell, Monitor Audio…..

I like Vintage Hifi

By: dolphinlui

dolphinlui — Tue, 02 Feb 2010 12:11:29 +0000

Very useful video. I have 4270 too.But L ch. bass control
mufunction. Volume unit is OK by measuring.
Also,the capacitor 12,000uf(50v)x2 for rectify found leakage.Can I replace it by 10,000uf(50v)x4 in parallel.
Could anyone give me suggestion.

By: HAL4400

HAL4400 — Mon, 01 Feb 2010 10:16:45 +0000

I wouldn’t recommend it. 50V 15.000uF is a good replacement.
ooh remove all the power supply capacitors!!!!
good luck!

By: dolphinlui

dolphinlui — Sat, 30 Jan 2010 19:53:36 +0000

Thanks for HAl4400 .How about the bass problem.
Would you like to give me any suggestion.Thanks.

By: HAL4400

HAL4400 — Thu, 28 Jan 2010 08:08:15 +0000

yes well it is a strange problem..
only bass on one channel isn’t working???

By: dolphinlui

dolphinlui — Wed, 27 Jan 2010 02:23:48 +0000

Yes.only bass controlable on right channel.
And I have found a little bit lower output on
left ch.

By: HAL4400

HAL4400 — Tue, 26 Jan 2010 17:31:51 +0000

trace the power source.
usualy it’s a defective capacitor or transistor. nothing special.

good luck

By: HippyBunny

HippyBunny — Sat, 23 Jan 2010 21:41:49 +0000

My dads merants somehow stoped working for no reasion. what can be wrong? i really need to rattle the windows in our house!

By: pleeezeeatme

pleeezeeatme — Fri, 22 Jan 2010 04:07:30 +0000

Do you you fix ‘em and sell ‘em? How much would you sell that one for, if you did? (I just got one, so I was curious)

By: HAL4400

HAL4400 — Mon, 18 Jan 2010 22:40:40 +0000

well that depends, if i really like a model i keep it for myself.
But this 4270 i bought for 75 euro broken.
restored and refurbished it, and sold it on for 349,- euro.(this was a bidding i usually ask 200/250 for a good 4270.