My interpretation of this marketing material is following:
- 200W high-power transformer -- this is literally the power rating of the transformer. Nothing is said how much power is delivered to the tip(s).
- 400W peak power -- two cold high-power tips (C245966) could potentially draw 400W from a power supply with a 200W transformer, during 2-seconds of warm-up.
- 100W peak power -- note that the leaflet mentions T210 handle. A C210 tip is likely to deliver up to 50W continuously.
Mine was delivered today.
Bought here
https://www.aliexpress.us/item/3256805833443815.html?spm=a2g0o.order_list.order_list_main.10.3ad61802QptNtH&dp=3017e259323f8fbd408a8e24a70a5290&af=2089403&cv=47843&afref=https%3A%2F%2Fakcedeals.eu%2F&mall_affr=pr3&utm_source=admitad&utm_medium=cpa&utm_campaign=2089403&utm_content=47843&dp=3017e259323f8fbd408a8e24a70a5290&af=2089403&cv=47843&afref=https%3A%2F%2Fakcedeals.eu%2F&mall_affr=pr3&utm_source=admitad&utm_medium=cpa&utm_campaign=2089403&utm_content=47843&aff_fcid=04343d7c37354a90a654709247365387-1710442351646-05120-_ePNSNV&aff_fsk=_ePNSNV&aff_platform=portals-tool&sk=_ePNSNV&aff_trace_key=04343d7c37354a90a654709247365387-1710442351646-05120-_ePNSNV&terminal_id=f66b0fa9eb23415586c911e54c0141a6&afSmartRedirect=y&gatewayAdapt=glo2usa4itemAdapt
Made date 30.08.2023
Firmware 1.13
Aixun app recognizes it as T420D.
Flashed newest firmware for T420D
Inside the transformer is 220VA.
On the display there is "T420D" info.
Inside the transformer is 220VA.
You misunderstood it, the Aliexpress store decides when to reduce the price by tax, this is shown on the last purchase screen.
Generally, if the price of the item exceeds EUR 150, you always pay the tax upon delivery.
Mine was delivered today.
Bought here
https://www.aliexpress.us/item/3256805833443815.html?spm=a2g0o.order_list.order_list_main.10.3ad61802QptNtH&dp=3017e259323f8fbd408a8e24a70a5290&af=2089403&cv=47843&afref=https%3A%2F%2Fakcedeals.eu%2F&mall_affr=pr3&utm_source=admitad&utm_medium=cpa&utm_campaign=2089403&utm_content=47843&dp=3017e259323f8fbd408a8e24a70a5290&af=2089403&cv=47843&afref=https%3A%2F%2Fakcedeals.eu%2F&mall_affr=pr3&utm_source=admitad&utm_medium=cpa&utm_campaign=2089403&utm_content=47843&aff_fcid=04343d7c37354a90a654709247365387-1710442351646-05120-_ePNSNV&aff_fsk=_ePNSNV&aff_platform=portals-tool&sk=_ePNSNV&aff_trace_key=04343d7c37354a90a654709247365387-1710442351646-05120-_ePNSNV&terminal_id=f66b0fa9eb23415586c911e54c0141a6&afSmartRedirect=y&gatewayAdapt=glo2usa4itemAdapt
Made date 30.08.2023
Firmware 1.13
Aixun app recognizes it as T420D.
Flashed newest firmware for T420D v1.24
Inside the transformer is 220VA.
On the display there is "T420D" info.
Had to pay tax and duty.
Yes, I asked him to send me a station with 200w transformer and with t420D firmware.
He agreed.
I paid 23 percent tax and small amount of duty.
Does anyone have the same issue?
Yes the Trafo is not completely silent , if you mean the typical trafo buzzing which goes up down exactly same as energy meter at display.
If ionly that and not really loud it’s normal for that stations trafo type , how it works , that power
There are different trafo types and ways to build to make it way more silent but that’s nothing expectable from a china clone .
Clones with DC (switching power supply ) could be very quiet but have their own problems with cartridges made for AC.
Really expensive trafo systems are way quieter too but still hearable. My pace is not really one of the silent ones and is about ⅓ as loud.
<40W trafo systems could be nearly unhearable (but what I mean as nearly unhearable could be too loud for someone else).
The trafo and the 2CH was the reason for me to buy that one , but I have known before it’s not silent , but my fume exhaust ventilation is not really silent too - a old GPU fan with a filter mounted on backside which turns on at full speed if I take any handle out of it’s cradle (and if soldering often you should have one too).
But could be a fault too if really loud, itself like unsymmetrical windings , broken or electronic fault …. Or even from your side ; bad energy with a lot of noise , unsymmetrical AC , bad ground , voltage, frequency …. (more unlikely in a private household that that from other devices , but bad energy supplier or bad installations ….). Or it stays at a non stable easy vibrating surface.
Or simply mechanically , maybe from shipping , like loose screws , direct contact to plastic housing (instead of that thin rubber). Station has potential to make it quieter too through better damping , decoupling , weight , better housing/case . As it is it’s a thin lightweight plastic case with thin rubber as decoupling without damping and thin rubber as feets too.
Coming back to this..
I kinda regret buying the T420 now tbh.. If I knew about the buzzing beforehand, I would've bought the T3A instead (plus apparently the buzzing there is fixable) and it would cost alot less..
Also; I got the left cradle now, and with both cradles and handles (left T210, right T245) connected, the buzzing is worse.
The T420 host is no different from the T420D except for the configuration, this has already been covered in this thread. I bought a T420 in the T245A configuration at a bestboard Store for $161.
I'll tell how to ensure the operation of two handles (in my case T245A and T115A) with one holder. First of all, disconnect the yellow pair of wires inside the holder from the threaded bushing of the mast mounting screw. Next, you will need a donor contact for the aircraft connector of the T115A handle; I took an unused contact of pin #6 (ID) from the connector of another cheap T245 handle ($3 with coins). In the T115A connector remove part of adhesive to access to the hole for pin #4 (standby) and install the "donor" contact there. Solder the wire, the other end of which is connected to the mast in the area of the wing clamp.
The c115 handle is connected directly to the station?
Also I'm impressed you were able to get the device for so cheap. The cheapest I could find before aliexpress coupons was $210 for a T420 with single C245 handle.
Did you purchase a C115 handle version (T405) (which I saw for around $170 on the store you mentioned) and then bought a separate C245 handle?
I bought a T420 in the T245A configuration at a bestboard Store for $161.
I bought the hangle (mast) with suspension (bracket) for the T115A separately at the same store, $6.67 with coins per pair. The T115A handle cost $5.75.
Yes, T115A handle with modified plug (with added "stanby" pin #4 and wire soldered to it) is connected directly to the host. Other end of the added wire must be connected to mast with bracket for T115A handle.
Yellow pair must be disconnected from mast's nut because this pair is "standby" pin signal of cradle's plug that also connected with T245/210 bracket and work with other channel (T245A handle in my case).
Sorry for my English, I can't explain it in any more detail or more clearly.
....
There is another way to get "donor's" pin without buying donor handle or plug. You can extract pin #3 (extractor) from plug of holder. But in this case you have to connect extractor in parallel with bracket so that the station goes into standby when you change the 245/210 tip.
But buying a donor T245 handle is more reasonable, since this handle does not lose its functionality after removing the unused pin #6 and can be useful at any time if the genuine AiXun T245A handle breaks.
T420 in the T245A configuration (with T245A handle included, but without specific mast with hangle bracket for T115A handle) have a regular price for $181.48 at this store. I used a $20 coupon at "anniversary sale". But similar coupones or promocodes you can get it very often. Aliexpress holds different sales almost every month.
The T115A handle i bought at the China DIYPHONE Store aslo with coins. Regular price was $8.19.
Additional cheapest T245 handle I bought for $3.03 with coins just to have a "donor's pin".
Do you have a photo or diagram of how the wire to the tall stand is connected to the main station?
Is that standby pin just a ground pin or something different?
Wondering if might not be possible to internally connect the standby pins of both channels inside the main station so there's no need to run an extra wire.
In hindsight, the cheapest maneuver was probably buying a T405 unit and hoping to get sent one with T420D firmware...
Yes, you can see additionally installed pin #4 in plug of T115A handle on my photos in post #115. One end of extra wire is soldered to this pin, other end - connected to the "tall stand" (pre-disabled from "stanby" yellow pair internally in holder).
"Stanby" pin #4 and "extractor" pin #3 are internally pulled up (to 3.3V) different pins of microcontroller. When you insert a handle to cradle (connected to pin #4) or tip of cartridge to extractor (connected to pin #3) you push these pins to gnd, and can see a state "stanby" or "extract" on station's display. T245 handle have a gnd on metal ring, T115A have a gnd both on metal tip and on metal shank near rubber cable gland.
No. "Stanby" pin #4, "extractor" pin #3 of channel #1, and "Stanby" pin #4 and "extractor" pin #3 of channel #2 are FOUR different pins of MC.
Maybe this words are "chinese half-truth" and these kits have the same hosts with same transfos (less powerful than T420/420d) that can work with both T115 and T210 handles but not at same time.